Raspberries bring a bright, slightly tart flavor that works beautifully in both sweet and savory dishes. When they’re in season, it’s worth having more than one way to use them up. In this post, we’re sharing a detailed recipe for raspberry crumble bars — a buttery, jammy dessert that’s easier than pie but just as satisfying — along with a roundup of other ways to enjoy fresh raspberries.
Why Raspberry Crumble Bars Are Worth Making
These bars have three simple layers: a buttery shortbread crust, a juicy raspberry filling, and a crumbly oat topping. They’re easy to slice and serve, travel well for potlucks or picnics, and let the bright raspberry flavor shine without needing any special equipment.
Ingredients
For the crust and crumble topping
- 2 ½ cups all-purpose flour
- 1 cup old-fashioned rolled oats
- 1 cup packed brown sugar
- ½ teaspoon baking powder
- ½ teaspoon salt
- 1 cup (2 sticks) cold unsalted butter, cubed
For the raspberry filling
- 4 cups fresh raspberries (or frozen, thawed and drained)
- ½ cup granulated sugar
- 2 tablespoons cornstarch
- 1 tablespoon fresh lemon juice
- ¼ teaspoon salt
Equipment
- A 9×13-inch baking pan
- Parchment paper
- Two mixing bowls
- A pastry cutter or fork
- A saucepan (optional, for pre-cooking the filling)
Instructions
Step 1: Prep the pan
Preheat your oven to 350°F (175°C). Line a 9×13-inch baking pan with parchment paper, leaving some overhang on the sides for easy removal later.
Step 2: Make the crust and crumble mixture
In a large bowl, whisk together the flour, oats, brown sugar, baking powder, and salt. Add the cold, cubed butter and cut it in using a pastry cutter or your fingers until the mixture forms coarse, crumbly clumps.
Step 3: Press the base layer
Set aside about 1 ½ cups of the crumble mixture for the topping. Press the remaining mixture firmly and evenly into the bottom of the prepared pan to form the crust.
Step 4: Pre-bake the crust
Bake the crust alone for 12-15 minutes, until it’s just lightly golden at the edges. This helps it hold together once the filling is added.
Step 5: Make the raspberry filling
While the crust bakes, gently toss the raspberries with sugar, cornstarch, lemon juice, and salt in a bowl. If your raspberries are very juicy, you can cook the mixture briefly in a saucepan over medium heat for 3-4 minutes until slightly thickened, then let it cool before using — this helps prevent a soggy bottom layer.
Step 6: Assemble
Spread the raspberry filling evenly over the pre-baked crust. Sprinkle the reserved crumble topping evenly over the raspberry layer.
Step 7: Bake
Bake for 35-40 minutes, until the topping is golden brown and the filling is bubbling around the edges. If the top browns too quickly, tent loosely with foil for the last 10 minutes.
Step 8: Cool completely
Let the bars cool completely in the pan on a wire rack, then refrigerate for at least 1 hour before slicing. This helps the filling set so the bars hold their shape when cut. Use the parchment overhang to lift the whole batch out before slicing into squares.
Tips for the Best Raspberry Bars
- Let the bars cool fully before slicing — cutting too soon will result in a runny filling.
- Use frozen raspberries in a pinch, but thaw and drain them well first to avoid excess liquid.
- Press the crust firmly into the pan so it holds together once baked and sliced.
- Add lemon zest to the filling for extra brightness.
Storage
Store the bars in an airtight container in the refrigerator for up to 5 days, or freeze individual bars for up to 3 months, thawing at room temperature before serving.
More Raspberry Recipes to Try
Beyond crumble bars, here are a few more ways to use fresh raspberries:
- Raspberry vinaigrette — blended raspberries, olive oil, vinegar, and a touch of honey for a bright salad dressing.
- Raspberry lemonade — raspberry puree stirred into fresh lemonade for a naturally sweet, colorful drink.
- Raspberry chia jam — a quick, no-pectin jam made with raspberries and chia seeds, ready in about 15 minutes.
- Raspberry ricotta toast — mashed raspberries and honey spread over creamy ricotta on toasted bread.
- Chocolate-dipped raspberries — fresh raspberries dipped in melted dark chocolate, a simple bite-sized treat.
Final Thoughts
Raspberry crumble bars are a simple, crowd-pleasing way to make the most of fresh raspberries, combining a buttery crust, jammy filling, and crisp topping in every bite. Once you’ve tried these, the other raspberry ideas above are worth exploring too — from drinks to quick jams to simple chocolate-dipped treats.
