This flanken-style short ribs recipe transforms tough cuts into melt-in-your-mouth perfection using your Instant Pot—no slow braising required. The secret lies in a precise marinade and controlled pressure cooking cycle that mimics traditional braising while cutting time by hours.
After years of testing, I’ve perfected a method that delivers restaurant-quality tenderness in under an hour, with a rich, caramelized sauce that clings to every bite.
The beauty of this recipe is its simplicity: just a few pantry staples and 30 minutes of active prep time before letting the Instant Pot do the work. Unlike slow-cooked versions, this method preserves the meat’s natural juices while breaking down collagen for that signature buttery, fork-tender texture.
The sauce reduces naturally during pressure cooking, eliminating the need for stovetop babysitting.
What you’ll end up with is a plate of deeply flavorful, smoky ribs that practically fall apart at the touch of a fork, all blanketed in a glossy, slightly sweet sauce. The technique ensures even cooking and maximum flavor penetration—no more dry edges or uneven doneness.
This is the kind of dish that transforms a weeknight into a special occasion without the hours of labor.
Serve with crusty bread to soak up every last drop of sauce or alongside roasted vegetables for a complete meal. The recipe scales perfectly for gatherings, and leftovers reheat beautifully. Let’s get started on these foolproof, pressure-cooker short ribs that will have everyone asking for seconds.
Ingredients for flanken style short ribs recipe instant pot
Fourteen ingredients. One pressure cooker. Restaurant-quality short ribs in under an hour.
| Ingredient | Amount | Notes |
|---|---|---|
| Beef Flanken Short Ribs 🥩 | 2 lb | Bone-in, 1/2-inch thick slices |
| Yellow Onion 🧅 | 1 whole | Thinly sliced, about 1 cup |
| Garlic Cloves 🧄 | 6 cloves | Minced, for marinade |
| Extra-Virgin Olive Oil 🫒 | ¼ cup | High-quality, fruity |
| Dry Red Wine 🍷 | ½ cup | Bold variety like Cabernet Sauvignon |
| Beef Broth 💧 | 1 cup | Low-sodium preferred |
| Tomato Paste 🍅 | 2 tbsp | Smooth, no sugar added |
| Apple Cider Vinegar 🍎 | 1 tbsp | For tenderizing |
| Smoked Paprika 🌶️ | 1 tsp | For smoky depth |
| Ground Cumin 🌿 | ½ tsp | Toasted for warmth |
| Diamond Crystal Kosher Salt 🧂 | 1 ½ tsp | Adjust to taste |
| Freshly Ground Black Pepper 🌶️ | ½ tsp | Coarse grind preferred |
| Fresh Thyme Leaves 🌿 | ½ tsp | Or 1/4 tsp dried thyme |
| Brown Sugar 🍚 | 1 tbsp | Light or dark |
The beef is non-negotiable—flanken-style short ribs with a 1/2-inch thickness deliver the perfect balance of tenderness and flavor. Look for cuts with visible marbling and a deep red color at your butcher or Whole Foods meat counter, where they often carry premium cuts. If you’re working with a whole rib roast, ask the butcher to slice it into 1/2-inch thick pieces—this ensures even cooking. The apple cider vinegar in the marinade is crucial for breaking down collagen, so don’t skip it. For the red wine, any bold variety like Cabernet Sauvignon or Merlot will work, but avoid sweet wines—they’ll make the sauce cloying.
No red wine? Dry sherry or beef broth works in a pinch, though the flavor profile shifts slightly. Short on fresh thyme? Dried thyme at one-third the amount suffices, but the fresh herb adds a brightness that dried can’t match. The tomato paste should be smooth—none of that chunky stuff. If you’re using Trader Joe’s or Costco brands, you’re golden. For the olive oil, splurge on a high-quality extra-virgin—it makes all the difference in the final sauce. The brown sugar adds just enough caramelization without overpowering the meat’s natural richness, but if you prefer a deeper sweetness, increase it to 1.5 tablespoons.
Marinate the ribs for at least 30 minutes (overnight for maximum tenderness) in an airtight container. The sauce reduces beautifully during pressure cooking, so no need to adjust it afterward. Reheat leftovers gently in the Instant Pot on the sauté function with a splash of water to prevent drying. These ribs keep well for 4 days in the fridge, though they’re best enjoyed within 2 days for peak texture. For longer storage, freeze portions in airtight containers for up to 3 months—just thaw overnight in the fridge before reheating.
Why You’ll Love This Recipe
- No Chopping Hassle: I swear by this recipe because the onions and garlic go in whole—peeled, halved, and tossed in. No knife skills required, just dump and cook.
- Wine-Infused Magic: That splash of dry red wine? It caramelizes into the ribs, leaving them tender with a deep, savory richness. The olive oil keeps them glossy and irresistible.
- Leftovers That Shine: The Instant Pot locks in flavor, so the ribs stay juicy even reheated. I make a double batch—one for dinner, one for sandwiches the next day (yes, it’s that good cold).
- Budget Meal for Crowds: Flanken cuts are affordable, and this recipe stretches easily. Feed six people for less than takeout, with minimal effort and maximum satisfaction.
Step-by-step instructions for flanken style short ribs in an Instant Pot
Transform tough flanken cuts into melt-in-your-mouth tenderness using pressure cooking mastery.
Prepare the Marinade and Sear the Ribs
In a small bowl, combine the 0.25 cup extra-virgin olive oil, 0.5 cup dry red wine, 1 tbsp apple cider vinegar, 1 tbsp brown sugar, 1 tsp smoked paprika, 0.5 tsp ground cumin, 1.5 tsp diamond crystal kosher salt, 0.5 tsp freshly ground black pepper, and 0.5 tsp fresh thyme leaves. Whisk until the brown sugar dissolves completely and the spices are fully integrated.
While the marinade rests, heat a large skillet over medium-high heat and add the 2 lb beef flanken short ribs in a single layer. Sear for 3-4 minutes per side until deeply browned, working in batches if needed. This initial sear builds flavor and creates a barrier that locks in juices during cooking. Transfer the seared ribs to a plate and pour the marinade over them, coating evenly. Let them marinate for at least 15 minutes while you prep the remaining ingredients.
Sauté Aromatics and Build the Base
In the same skillet used for searing, reduce heat to medium and add the 1 whole yellow onion and 6 cloves minced garlic. Cook for 5-6 minutes until the onions soften and turn translucent, then become golden around the edges. This step develops the aromatic foundation for your dish.
Stir in the 2 tbsp tomato paste and cook for 1 minute until it darkens slightly. This creates a rich, concentrated flavor base that will meld beautifully with the ribs. Immediately transfer the onion-garlic-tomato mixture to the Instant Pot using a spatula, scraping up any browned bits from the bottom of the pan.
Pressure Cook to Perfect Tenderness
Add the marinated ribs to the Instant Pot along with their marinade. Pour in the 1 cup beef broth to create enough liquid for proper pressure cooking. Secure the lid and set the valve to “Sealing.” Select the “High Pressure” setting for 45 minutes—this duration ensures the connective tissue breaks down completely while maintaining structural integrity.
Once cooking completes, allow a 10-minute natural release before quick-releasing any remaining pressure. This gradual release prevents the meat from becoming tough. The ribs should easily pull apart at the seams with minimal resistance, indicating perfect tenderness. If they’re not quite there, return to high pressure for an additional 10 minutes and repeat the release process.
Reduce the Sauce and Finish
Remove the ribs from the Instant Pot and transfer them to a serving platter. Strain the cooking liquid through a fine-mesh sieve into a saucepan, pressing on the solids to extract maximum flavor. Return the strained liquid to medium-high heat and reduce by half—this intensifies the sauce’s richness and creates a glossy finish.
Return the ribs to the reduced sauce and let them simmer for 2-3 minutes to absorb the final flavor infusion. Serve immediately over mashed potatoes, polenta, or crusty bread, ensuring each bite delivers that perfect balance of smoky depth and melt-in-your-mouth tenderness you’ve worked so hard to achieve.
Pro Tips For Making Flanken Style Short Ribs Recipe Instant Pot
- Sear the Ribs First: Don’t skip the stovetop sear—even in an Instant Pot. Pat the ribs dry, hit them with high heat in olive oil for 2-3 minutes per side until deep brown. I used to rush this, and the sauce never tasted as rich. That crust? It’s what carries the flavor through the slow cook.
- Slice Ribs Against the Grain: Flanken cuts are long and lean—slice them thin and against the grain before searing. A sharp knife and steady hand make all the difference. I learned this after serving my first batch with tough, chewy slices. Thin cuts melt in your mouth, and you’ll use less time cooking them down later.
- Deglaze with Wine Early: After searing the onions and garlic, pour in the red wine right away while the pot is still hot. Let it bubble for 30 seconds to pull up all those browned bits—this is your flavor base. I used to add it later, and the sauce always tasted flat. That quick deglaze? Non-negotiable for depth.
- Pressure Cook on High: Set the Instant Pot to high pressure for the full 45 minutes, no shortcuts. Low pressure won’t tenderize these tough cuts fast enough. I tried low once—ended up with ribs that were almost done. High pressure guarantees melt-in-your-mouth results every time.
Troubleshooting this recipe
Ribs Too Tough?
If your short ribs turn out tough instead of tender, it’s likely due to insufficient cooking time or improper pressure release. The 45-minute high-pressure cycle is non-negotiable—this ensures collagen breakdown. For extra assurance, check your ribs after 45 minutes and extend by 10 minutes if they still resist a fork.
Always do a 10-minute natural release first to avoid rubbery texture. 💡
Sauce Too Thin?
A thin sauce usually means you didn’t reduce it enough. After straining the cooking liquid, reduce it by half on medium-high heat—this takes about 8-10 minutes. If it’s still too thin, simmer uncovered until it thickens.
For extra richness, stir in 1 tbsp cold butter at the end. The sauce should coat the back of a spoon smoothly.
Uneven Cooking?
Uneven doneness often happens when ribs aren’t submerged properly. Ensure the 2 lb ribs are fully covered by the marinade and broth before sealing the Instant Pot.
If they’re not, add a splash of broth or water to reach the minimum liquid line. Also, avoid overcrowding—cook in batches if needed. 🌡️
Dry Meat?
Dry ribs usually mean the pressure release was too quick or the meat was overcooked. Always do a 10-minute natural release before quick-releasing.
If the ribs are slightly overdone, return them to the Instant Pot with ¼ cup broth and cook on high pressure for just 5 minutes to rehydrate. Resting them for 10 minutes after cooking also helps redistribute juices.
Burnt Onions?
Burnt aromatics ruin the dish’s depth. Sauté onions and garlic on medium heat for 5-6 minutes—they’re done when golden, not blackened. If they start browning too quickly, reduce heat slightly. For extra insurance, add a pinch of sugar to caramelize them gently. 🍳
Lid Won’t Seal?
A stuck valve or gasket can derail your cook. First, check for food debris around the lid’s sealing ring. If it’s stuck, run the Instant Pot’s steam release function for 1 minute to reset it.
For stubborn issues, wipe the gasket with a damp cloth and ensure the valve is fully closed. If problems persist, your gasket may need replacing—Instant Pot’s OEM gaskets are the most reliable.**
Nutrition facts
Frequently asked questions
Can I use bone-in or boneless flanken short ribs?
This recipe is designed for bone-in cuts—those little bones add incredible flavor to the sauce. If you must use boneless, reduce the cooking time by 5 minutes to avoid overcooking. Bone-in ribs stay juicier longer thanks to the marrow release during pressure cooking.
What’s the secret to getting that perfect smoky flavor?
The smoked paprika and apple cider vinegar in the marinade create that signature smokiness, but the real magic happens during pressure cooking. The 45-minute high-pressure cycle mimics slow-braising while concentrating flavors. For extra depth, add ½ tsp liquid smoke to the sauce at the end.
Can I make this ahead of time?
These ribs reheat beautifully. Cook as directed, then refrigerate in the sauce for up to 4 days. Reheat on the Instant Pot sauté function with ¼ cup broth for 5 minutes to restore moisture. For freezing, portion ribs with sauce in airtight containers for up to 3 months. Thaw overnight in the fridge before reheating.
How do I adjust this for a larger crowd?
This recipe scales perfectly. For 6 servings, use 3 lb ribs and double all other ingredients. Cook in batches if needed—never overcrowd the Instant Pot. The 45-minute cook time remains the same for even doneness. For extra sauce, reduce the strained liquid by half as directed, then reheat portions separately.
What’s the best way to serve these?
These ribs shine with creamy mashed potatoes or polenta to soak up the sauce. For a complete meal, add roasted root vegetables or a simple arugula salad with lemon vinaigrette. The sauce also pairs beautifully with crusty bread for scooping. Save some sauce to drizzle over the top before serving for extra presentation.
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