When cozy fruit desserts call your name, nothing satisfies a warm craving faster than a dump-and-bake creation. Traditional cobblers and crisps often come loaded with heavy syrups, processed sugars, and time-consuming prep steps like peeling or thawing fruit. This Sugar-Free Frozen Peach Dump Dessert changes the game completely.

By combining unthawed frozen peach slices with a golden, cinnamon-infused crumble topping, this low-sugar alternative delivers all the rich comfort of a classic Southern cobbler without any added sugar. Best of all, you do not need a mixer, a rolling pin, or any kitchen prep skills to pull it off. Just layer the ingredients, bake, and serve a bubbling homemade dessert that everyone will love.

Why You Will Love This Sugar-Free Frozen Peach Dessert

No Thawing Needed: Frozen peaches go directly from the freezer to your baking dish. As they bake, they release natural juices that combine perfectly with the buttery crumble.
Zero Added Sugar: Made with zero-calorie granulated sweeteners such as allulose or monk fruit, this dessert keeps sweetness high while keeping carb counts reasonable.
Minimal Prep Time: With only five core ingredients and about ten minutes of active preparation, you can spend less time in the kitchen and more time enjoying dessert.
Warm Comfort Flavor: Cinnamon and melted butter combine to create a bakery-style golden crust that tastes like classic home cooking.

Simple Ingredients for the Ultimate No-Prep Bake

To make this dessert, you only need basic kitchen staples and your favorite granulated sugar replacement:

The Fruit Base

4 cups frozen peach slices (unthawed): Keeps the prep fast while ensuring vibrant, juicy flavor year-round.
1/2 cup granulated sugar-free sweetener: Allulose or monk fruit blend works best to balance the natural fruit tartness without aftertaste.
1 teaspoon ground cinnamon: Adds warmth and enhances the peach aroma during baking.

The Buttery Crumble Topping

1 cup all-purpose flour: Forms the structure of the crisp, golden crust.
1/2 cup granulated sugar-free sweetener: Helps create a lightly caramelized, sweet topping.
1 teaspoon ground cinnamon: Gives the crumble a rich spice flavor.
1/2 cup unsalted butter (melted): Binds the dry ingredients together into thick, clumpy crumbs that crisp up beautifully in the oven.

Step-by-Step Instructions

Follow these simple steps to assemble and bake your dessert:

Step 1: Prep the Oven and Pan

Preheat your oven to 350°F (175°C).
Set an oven rack in the center position for even heat distribution.
Place an ungreased 2-quart glass casserole dish on a rimmed baking sheet. (The baking sheet catches any peach juices that bubble over during baking).

Step 2: Layer the Frozen Peaches

Measure out 4 cups of frozen peach slices and pour them directly into the glass dish.
Spread the peaches evenly across the bottom of the dish.
Do not thaw the peaches before adding them; keeping them frozen prevents them from becoming mushy too quickly.

Step 3: Mix the Golden Crumble Topping

In a medium mixing bowl, combine 1 cup of all-purpose flour, 1/2 cup of granulated sugar-free sweetener, and 1 teaspoon of ground cinnamon. Whisk well until combined.
Pour in 1/2 cup of melted unsalted butter.
Stir with a fork or spatula until the mixture becomes thick, moist, and forms cohesive clumps.

Step 4: Assemble and Bake

Scatter the crumble mixture evenly over the layer of frozen peaches, covering as much of the fruit surface as possible.
Place the baking sheet with the casserole dish into the preheated oven.
Bake for 40 to 50 minutes. You will know it is ready when the topping turns a deep golden brown and the peach juices bubble along the edges.

Step 5: Rest and Serve

Carefully remove the dessert from the oven.
Allow it to rest for 15 to 20 minutes before serving. This resting period allows the hot fruit juices to settle and thicken slightly.

Pro Tips for the Best Textures and Flavor

Keep Peaches Fully Frozen: Do not let the fruit sit at room temperature before baking. Baking from frozen allows the fruit to release its liquids gradually while maintaining structure.
Avoid Overmixing the Topping: Mix the butter into the flour and sweetener just until thick clumps form. Overmixing can create a dense paste instead of a light crumble.
Bake to a Deep Golden Color: Don’t take the dessert out too early. The deeper the golden color on top, the crunchier your crumble layer will be.
Use a Rimmed Sheet: Peach fruit bakes can bubble vigorously around the edges. Using a rimmed sheet underneath keeps your oven clean.

Serving Suggestions and Variations

This dessert is versatile and pairs wonderfully with lighter, sugar-free accompaniments:

Warm with Cream: Serve a portion straight from the dish while still warm, topped with a dollop of sugar-free whipped topping.
Spiced Finish: Add a dusting of fresh ground cinnamon or ground nutmeg across the top right before serving.
Nutty Crunch: For extra texture, mix 1/4 cup of finely chopped pecans or walnuts into the crumble topping before drizzling with butter.

Storage and Reheating Guidelines

Refrigeration: Allow any remaining dessert to cool completely. Cover the dish tightly with foil or transfer leftovers into an airtight container. Store in the refrigerator for up to 3 days.
Reheating: To regain the crispiness of the topping, reheat individual portions in an oven or toaster oven at 350°F for 8–10 minutes. Alternatively, microwave on high for 30–45 seconds for a fast warm treat.