Whenever unexpected guests stopped by, Grandma Helen could always count on these simple 3-ingredient treats to come together in no time
3-Ingredient Raspberry Oat Bars
These simple Raspberry Oat Bars are proof that delicious homemade desserts don’t need a long ingredient list. Made with just three easy ingredients, they feature a buttery oat crumble base, a sweet layer of raspberry filling, and a golden topping that bakes into the perfect combination of soft and crisp. They’re a wonderful choice for gatherings, snacks, lunchbox treats, or whenever you want a quick dessert with homemade flavor.
🛒 Ingredients
| Ingredient | Amount |
|---|---|
| Oatmeal cookie mix | 1 pouch (17–18 ounces) |
| Unsalted butter, melted | ½ cup (1 stick) |
| Raspberry preserves | 1 to 1¼ cups |
👩🍳 Instructions
Step 1: Prepare the Pan
Heat the oven to 350°F (175°C). Lightly coat a 9×13-inch baking dish with butter or nonstick cooking spray.
Step 2: Create the Oat Crumble
Add the oatmeal cookie mix to a bowl and pour in the melted butter. Stir until the mixture becomes evenly combined and forms a moist, crumbly texture.
Step 3: Build the Bottom Layer
Press about two-thirds of the crumble mixture firmly into the bottom of the prepared baking dish. Spread it evenly to create a solid base.
Step 4: Spread the Raspberry Filling
Spoon the raspberry preserves over the crust and spread into an even layer. Leave a small space around the edges if desired for easier serving.
Step 5: Add the Crumble Topping
Sprinkle the remaining oat mixture over the raspberry layer, keeping it loose and uneven to create a classic crumb topping.
Step 6: Bake Until Golden
Bake for 22–28 minutes, or until the top is lightly browned and the raspberry filling begins bubbling around the edges.
Step 7: Allow to Cool
Remove the pan from the oven and place it on a cooling rack. Let the bars cool completely for about 1 hour so the filling can firm up and the bars slice cleanly.
Step 8: Cut and Serve
Slice into 12–16 squares and gently lift each piece from the pan. Serve at room temperature and enjoy the buttery oat texture with the sweet raspberry center.
