Low Fat Low Sugar Apple Crisp Recipe: Warm Spiced Filling With Oat Topping

This apple crisp delivers all the comfort of the classic without the guilt, using smart substitutions to reduce fat and sugar.

Warm spiced apples are topped with a crispy oat mixture, baked until golden and fragrant. The result is a dessert that satisfies your sweet tooth while keeping nutrition in check.

Ingredients for Low Fat Low Sugar Apple Crisp

Pantry staples plus fresh apples come together for this lighter dessert classic.

The apples are the star—Granny Smith gives you that perfect tart-sweet balance (and they hold their shape when baked). Trader Joe’s or your local farmers market will have the best selection. For the oats, grab the thick-cut kind if you can—they crisp up nicer. I always keep a bag of Bob’s Red Mill in my pantry for baking projects like this.

Need to swap something? Honeycrisp apples work instead of Granny Smith (just add a squeeze of lemon to balance sweetness). No brown sugar? Coconut sugar at a 1:1 ratio gets you close. Out of oats? Quick oats work too, though the texture’s a little different. The walnuts can be swapped for almonds or pecans—whatever you’ve got on hand.

This keeps well for 3-4 days at room temperature (covered, of course). The topping softens the longer it sits, but honestly? It’s still delicious. Freeze baked portions for up to 3 months—just reheat in the oven to crisp it back up.

Step-by-Step Instructions for Low Fat Low Sugar Apple Crisp

Here’s the method. Straightforward, tested, works every time.

Step 1: Prepare the Apple Filling

Peel, core, and slice the 6 whole Granny Smith Apples into ¼-inch thick slices. I like to keep them uniform so they cook evenly. As you slice, toss them with the 1 tbsp Lemon Juice to prevent browning and keep them crisp.

In a large bowl, combine the sliced apples with the 0.25 cup Light Brown Sugar, 2 tbsp Granulated Stevia, 1.5 tsp Ground Cinnamon, 0.25 tsp Ground Nutmeg, and 0.25 tsp Salt. Toss gently until the apples are evenly coated. The spices should smell fragrant and the apples should glisten slightly from the sugar.

Transfer the spiced apple mixture to a greased 8×8-inch baking dish and spread it out into an even layer. The dish should be filled but not overflowing, as the apples will release juices during baking.

Step 2: Make the Oat Topping

In a medium bowl, combine the 1.5 cups Old-Fashioned Rolled Oats, 0.5 cup Whole Wheat Flour, 1.5 tsp Ground Cinnamon, and the 2 tbsp Unsalted Butter (melted). Stir until the mixture resembles coarse crumbs. If it seems too dry, add a splash of water, but don’t overdo it—the topping should hold together when pressed.

Stir in the 0.5 cup Chopped Walnuts, ensuring they’re evenly distributed. The mixture should look slightly clumpy, with the oats and walnuts coated in the flour-butter blend. This is your crisp topping, and it should smell rich and nutty.

Step 3: Assemble and Bake

Sprinkle the oat topping evenly over the apple filling, pressing down lightly to help it adhere. Don’t pack it too tightly—you want the topping to crisp up in the oven. The dish should now look like a rustic, textured blanket over the apples.

Bake in a preheated oven at 350°F for 40-45 minutes, or until the topping is golden brown and the apple filling is bubbly at the edges. If the topping starts to brown too quickly, tent the dish loosely with foil to prevent burning.

You’ll know it’s done when the apples are tender when pierced with a knife and the topping is crisp to the touch.

Step 4: Serve Warm with Optional Yogurt

Remove the dish from the oven and let it cool for 10 minutes before serving. This brief rest allows the juices to thicken slightly, making it easier to scoop. The apples should be soft but not mushy, with a syrupy sauce pooling around them.

Serve warm, topped with a dollop of the 0.5 cup Non-Fat Greek Yogurt if desired. The cool, creamy yogurt contrasts beautifully with the warm, spiced apples and crispy oat topping. Each serving should have a mix of tender apples, crunchy topping, and just the right amount of sweetness.

Serving Suggestions for This Dish

Warm Serving Style

This dessert tastes best served warm, straight from the oven. The apples are at their most fragrant and the topping has that perfect crispness. I always let it rest for 10 minutes first so the juices thicken slightly. 💛

Yogurt Topping

Spoon a generous 2 tbsp of non-fat Greek yogurt over each portion. The cool creaminess balances the warm spices beautifully. I like to use Chobani for its thick texture.

Vanilla Ice Cream

For a slightly sweeter option, serve with a small scoop of sugar-free vanilla ice cream. The contrast between hot and cold is irresistible. Halo Top works perfectly here.

Fresh Fruit Garnish

Add fresh sliced strawberries or raspberries on top. They add color, freshness, and natural sweetness without extra sugar. About ¼ cup per serving is ideal.

Drizzle Option

A light drizzle of sugar-free caramel sauce takes this over the top. I warm 1 tbsp of Walmart’s Great Value brand for 15 seconds in the microwave before drizzling.

Portion Control

Serve in 6-ounce ramekins for automatic portion control. This makes it easy to enjoy without overindulging. The presentation looks lovely too. ✨

Frequently Asked Questions