As I rummaged through my pantry, I stumbled upon a jar of raspberry preserves that screamed for attention. This serendipitous find turned into a culinary adventure, leading me to create these delightful Raspberry Oatmeal Crumble Bars. With their buttery, crispy oatmeal crust and vibrant raspberry layer, they’re not just a dessert; they’re a heartwarming reminder of homemade comfort food. These bars are perfect for any occasion, whether you’re hosting friends or simply craving a sweet treat after dinner. Plus, they come together in no time with just a handful of simple ingredients! What’s your favorite way to enjoy fruit-based desserts? Let’s dive into this delicious recipe together!

Why You’ll Love These Crumble Bars
Simplicity at Its Best: With just a few basic ingredients, you’ll whip up these Raspberry Oatmeal Crumble Bars in no time!
Bold Fruit Flavor: The vibrant raspberry preserves create a delightful, fruity filling that bursts with sweetness in every bite.
Versatile Options: Not only are these bars perfect with raspberry, but you can easily swap in your favorite preserves like apricot or blueberry for a fun twist!
Crowd-Pleasing Treat: Whether at a family gathering or a cozy night in, these bars are sure to impress everyone. Serve with a scoop of vanilla ice cream for the ultimate indulgence!
Gluten-Free & Vegan Potential: With simple substitutions, you can enjoy these bars gluten-free or vegan, making them inclusive for all dietary preferences.
So why settle for fast food desserts when you can have homemade goodness instead? Give these Raspberry Oatmeal Crumble Bars a try, and don’t miss out on other delicious ideas like Nut Baked Oatmeal or Blueberry Baked Oatmeal!
Raspberry Oatmeal Crumble Bars Ingredients
For the Crust and Topping
- Butter (1/2 cup, 1 stick) – Adds richness to the crust; use unsalted for more control over saltiness.
- Granulated Sugar (1/2 cup) – Provides the right sweetness and helps create a tender texture.
- Light Brown Sugar (1/4 cup, packed) – Introduces a deep caramel-like flavor and extra moisture.
- Vanilla Extract (1 tsp) – Enhances the overall flavor; almond extract is a delightful alternative.
- All-Purpose Flour (1 cup) – Gives structure to the bars; gluten-free flour blends can be used as a substitute.
- Old-Fashioned Rolled Oats (3/4 cup) – Provides chewiness; avoid quick oats for better texture.
- Salt (Pinch, optional) – Balances the sweetness and elevates the overall flavor.
- Raspberry Preserves (1 cup) – Acts as the luscious fruity filling; both seeded and seedless varieties work beautifully.
Feel free to customize these Raspberry Oatmeal Crumble Bars to your tastes, creating delightful variations along the way!
Step‑by‑Step Instructions for Raspberry Oatmeal Crumble Bars
Step 1: Preheat and Prepare Your Pan
Begin by preheating your oven to 350°F (175°C). While the oven is warming up, take an 8×8-inch baking pan and line it with aluminum foil, leaving some overhang for easy removal. Lightly spray the foil with cooking spray to prevent sticking and ensure your Raspberry Oatmeal Crumble Bars come out perfectly.
Step 2: Melt the Butter
In a microwave-safe bowl, melt 1/2 cup of butter for about 1 minute until fully liquefied. Keep an eye on it to prevent overheating. Once melted, let the butter cool slightly before proceeding to the next step. This will help maintain the right consistency in your crumble bars without cooking other ingredients.
Step 3: Combine Sugars and Vanilla
Next, whisk the melted butter with 1/2 cup granulated sugar, 1/4 cup light brown sugar, and 1 teaspoon of vanilla extract until everything is well incorporated. The mixture should be smooth and slightly creamy, showcasing a beautiful blend of colors. This will contribute to the sweetness and rich flavor of your Raspberry Oatmeal Crumble Bars.
Step 4: Mix Dry Ingredients
Now, stir in 1 cup of all-purpose flour, 3/4 cup of old-fashioned rolled oats, and a pinch of salt into the butter-sugar mixture. Mix until just combined, ensuring there are no flour pockets left. Reserve 1 heaping cup of this mixture for the topping, which will add that delightful crumble texture on top of the raspberry preserves.
Step 5: Form the Crust
Press the remaining mixture firmly into the bottom of the prepared baking pan to create a compact and even crust. Make sure it’s spread evenly to ensure consistent baking. This crust will form the base of your delicious Raspberry Oatmeal Crumble Bars, so take your time to get it right!
Step 6: Spread the Raspberry Preserves
Gently spoon 1 cup of raspberry preserves over the crust, spreading it evenly to cover all edges. Aim for a layer that is about 1/8 to 1/4 inch thick. The preserves should glisten and provide a vibrant contrast against the golden crust, promising a burst of fruity flavor in every bite.
Step 7: Add the Crumble Topping
Sprinkle the reserved crumble mixture over the raspberry layer, ensuring even coverage. It’s okay to squeeze some of the crumble to create larger clumps for added texture. This will provide that irresistible topping that holds everything together while baking and gives a satisfying crunch to your Raspberry Oatmeal Crumble Bars.
Step 8: Bake to Perfection
Finally, bake your bars in the preheated oven for about 30 minutes. You’re looking for the edges to be set and a lovely golden hue on top. Once they look perfect, remove them from the oven and let them cool in the pan for at least 2 hours on a wire rack. This cooling time is crucial for the bars to firm up before slicing into delicious squares.

What to Serve with Raspberry Oatmeal Crumble Bars
Dive into a delicious world of flavors that perfectly complements your homemade treat!
-
Vanilla Ice Cream: A scoop of creamy vanilla ice cream melts beautifully over warm bars, enhancing the fruity flavor and adding richness.
-
Whipped Cream: A dollop of freshly whipped cream adds a light and airy contrast, making each bite feel indulgent and decadent.
-
Fresh Berries: Serve with a handful of fresh raspberries or blueberries for a burst of natural sweetness and vibrant color that brightens up the dish.
-
Coffee or Tea: A warm cup of your favorite coffee or tea provides a comforting balance to the sweet bars, perfect for afternoon gatherings.
-
Nutty Granola: Sprinkle some crunchy granola on top for added texture and a nutty flavor that contrasts beautifully with the soft crumb of the bars.
-
Nut Butter Drizzle: Drizzle a bit of almond or peanut butter for a creamy, nutty richness that elevates the flavor profiles and adds a delightful creaminess.
Expert Tips for Raspberry Oatmeal Crumble Bars
Use Old-Fashioned Oats: Ensure you use rolled oats instead of quick oats to avoid a crumbly texture that won’t hold together well.
Press Firmly: Don’t skimp on pressing the crust into the pan; a firmly packed base helps the Raspberry Oatmeal Crumble Bars hold their shape when baked.
Reserve Properly: Remember to set aside the right amount of crumble for the topping. This balance creates that delightful texture layer we all love!
Cooling Time: Let the bars cool for a full 2 hours before slicing. This allows them to firm up, making it easier to cut clean squares.
Flavor Variations: Feel free to experiment by substituting raspberry preserves with your favorite fruit preserves like apricot or blueberry for a fresh twist.
Make Ahead Options
These Raspberry Oatmeal Crumble Bars are perfect for busy cooks looking to save time! You can prep the crust and topping up to 24 hours in advance. Simply prepare the crust and crumble mixture as instructed, then store them separately in airtight containers in the refrigerator. Alternatively, you can also spread the raspberry preserves on the crust ahead of time but recommended doing this just before baking to maintain freshness. When you’re ready to bake, simply assemble everything and pop them in the oven, and enjoy homemade goodness with minimal effort. The result will be just as delicious, maintaining that buttery, fruity flavor in every bite!
Raspberry Oatmeal Crumble Bars Variations
Feel free to tailor these delicious bars to suit your taste preferences and dietary needs!
- Gluten-Free: Swap all-purpose flour for a gluten-free blend to enjoy these bars without worry.
- Vegan: Use coconut oil or vegan butter instead of regular butter for a plant-based treat.
- Nutty Bliss: Incorporate chopped walnuts or pecans into the crumble for an added crunch and rich flavor.
- Fruit Fusion: Substitute raspberry preserves with apricot, blueberry, or cherry for a new fruity experience! Imagine the juicy bursts of flavor dancing on your palate.
- Spiced Up: Sprinkle in some cinnamon or nutmeg to the crumble for a warm, cozy finish that will delight your senses.
- Chocolate Lover: Fold in some mini chocolate chips into the crumble for a rich chocolate twist that pairs beautifully with the fruit.
- Less Sugar: Reduce granulated sugar by 1/4 cup and use a natural sweetener like honey or maple syrup for a healthier option.
- Oatmeal Cookies: For a change, press the mixture into cookie shapes, baking until golden brown for delightful oatmeal cookies instead of bars.
These variations not only enhance the bars but also allow you to explore new flavors! Once you’ve perfected your Raspberry Oatmeal Crumble Bars, you might find yourself inspired to try other delightful desserts like Cinnamon Toasted Oatmeal or Pistachio Raspberry Cake. Happy baking!
Storage Tips for Raspberry Oatmeal Crumble Bars
Room Temperature: Store the bars in an airtight container at room temperature for up to 5 days to maintain their chewy texture and freshness.
Fridge: For longer storage, refrigerate the Raspberry Oatmeal Crumble Bars in an airtight container, where they will stay fresh for up to 2 weeks.
Freezer: These bars freeze beautifully! Wrap them tightly in plastic wrap and place them in an airtight container. They can be frozen for up to 2 months for a tasty treat anytime.
Reheating: When ready to enjoy, simply thaw the bars at room temperature for a few hours or warm them in the microwave for about 10-15 seconds for that freshly-baked taste!

Raspberry Oatmeal Crumble Bars Recipe FAQs
How do I choose the right raspberries for the preserves?
Absolutely! When selecting raspberries, look for plump, vibrant berries without any dark spots or mold. Fresh raspberries should have a deep red color and feel firm to the touch. If you’re using preserves, opt for high-quality brands that contain real fruit rather than artificial flavorings for the best flavor impact!
Can I make these bars gluten-free?
Very! To make Raspberry Oatmeal Crumble Bars gluten-free, simply substitute all-purpose flour with a gluten-free flour blend. Ensure that any oats you use are labeled gluten-free, as some oats may be processed in facilities that handle gluten-containing grains. This will keep the deliciousness intact while accommodating dietary preferences!
How should I store leftover bars?
Storing is easy! Keep your Raspberry Oatmeal Crumble Bars in an airtight container at room temperature for up to 5 days. Alternatively, if you want to extend freshness, refrigerate them for up to 2 weeks. Don’t forget, they freeze beautifully—just wrap them tightly in plastic wrap and then place them in an airtight container for up to 2 months!
What if my bars are too crumbly when trying to slice?
Sometimes, this can happen if the crust wasn’t pressed firmly enough or if they were sliced too soon. To combat this, ensure you press the crust down firmly during preparation. Allow them to cool completely for at least 2 hours before slicing. If they’re still crumbly, try refrigerating them for a little while before cutting; this helps them firm up!
Can I use different fruit preserves instead of raspberries?
Absolutely, the more the merrier! Feel free to swap out raspberry preserves with apricot, blueberry, or even cherry preserves for a fabulous twist on flavor. Just be mindful that different fruits have varying sweetness levels; you may want to adjust the sugar in the recipe slightly depending on the preserves you choose. Enjoy experimenting!

Delicious Raspberry Oatmeal Crumble Bars You'll Love!
Ingredients
Equipment
Method
- Preheat your oven to 350°F (175°C). Line an 8x8-inch baking pan with aluminum foil, leaving some overhang for easy removal. Lightly spray with cooking spray.
- Melt 1/2 cup of butter in a microwave-safe bowl for about 1 minute until fully liquefied. Let cool slightly.
- Whisk the melted butter with granulated sugar, light brown sugar, and vanilla extract until smooth and creamy.
- Stir in flour, rolled oats, and a pinch of salt until combined. Reserve 1 heaping cup of this mixture for topping.
- Press the remaining mixture into the bottom of the prepared baking pan to create an even crust.
- Spread 1 cup of raspberry preserves evenly over the crust, about 1/8 to 1/4 inch thick.
- Sprinkle the reserved crumble mixture over the raspberry layer, creating a topping with varied textures.
- Bake your bars for about 30 minutes until the edges are set and golden. Cool in the pan for at least 2 hours.

Leave a Reply