Raspberry Crumble Bars – Buttery, Fruity & Sweet-Tart Dessert Bars

These Raspberry Crumble Bars are soft, buttery dessert bars with a sweet-tart raspberry filling and a golden crumb topping. They’re easy to slice, perfect for sharing, and ideal for dessert trays, snacks, or lunchbox treats.

Why You’ll Love This Recipe

  • Sweet and tangy raspberry filling
  • Buttery crumble texture
  • Easy one-pan dessert
  • Perfect for parties and gatherings
  • Simple pantry ingredients
  • Great make-ahead treat
  • Slice-and-serve dessert bars
  • Kid-friendly snack
  • Freezer-friendly
  • Bakery-style dessert at home

Ingredients

Oat crumble bars filled with raspberry jam and powdered sugar

For the Crust & Crumble

  • 1 1/2 cups all-purpose flour
  • 1 cup rolled oats
  • 3/4 cup brown sugar
  • 1/2 teaspoon baking powder
  • 1/4 teaspoon salt
  • 3/4 cup unsalted butter, melted
  • 1 teaspoon vanilla extract

For the Raspberry Filling

  • 2 cups fresh or frozen raspberries
  • 1/3 cup granulated sugar
  • 1 tablespoon lemon juice
  • 2 teaspoons cornstarch
  • 1/2 teaspoon vanilla extract

Step-by-Step Instructions

Flat lay of raspberries, oats, butter, flour, and jam ingredients

  1. Preheat oven to 350°F (175°C).
  2. Line an 8×8-inch baking pan with parchment paper.
  3. In a bowl, mix flour, oats, brown sugar, baking powder, and salt.
  4. Add melted butter and vanilla extract.
  5. Stir until crumbly mixture forms.
  6. Press half of the mixture into the baking pan to form the crust.
  7. In another bowl, mix raspberries, sugar, lemon juice, cornstarch, and vanilla.
  8. Spread raspberry filling evenly over the crust.
  9. Sprinkle remaining crumble mixture on top.
  10. Bake for 35 to 40 minutes until golden and bubbly.
  11. Allow to cool completely before slicing.

Tips & Variations

  • Use mixed berries instead of only raspberries
  • Add almond extract for deeper flavor
  • Sprinkle powdered sugar on top
  • Add white chocolate chips to crumble
  • Use frozen raspberries (no need to thaw fully)
  • Add lemon zest for brightness
  • Make in a larger pan for thinner bars
  • Serve warm with ice cream
  • Add chopped nuts for crunch
  • Double the recipe for a crowd

Storage & Freezer Instructions

  • Store at room temperature up to 2 days
  • Refrigerate up to 5 days
  • Freeze up to 2 months
  • Best served slightly chilled or room temp

Serving & Pairing Ideas

Four step collage showing mixing crumble, layering jam, topping, and baking bars

  • Dessert platter
  • Afternoon snack
  • Holiday cookie tray
  • Picnic dessert
  • Lunchbox treat
  • Coffee break snack
  • Party finger dessert
  • Bake sale item
  • Weekend baking project
  • Sweet gift box

Frequently Asked Questions

Can I use frozen raspberries?

Yes, use them straight from frozen.

Why are my crumble bars soggy?

They may need more cooling time to set properly.

Can I make them gluten-free?

Yes, use a gluten-free flour blend and certified oats.

Can I reduce sugar?

Yes, but the filling may be slightly more tart.

Ready to Make It?

These Raspberry Crumble Bars are buttery, fruity, and perfectly balanced between sweet and tart, making them an easy homemade dessert everyone will love.

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Oat crumble bars filled with raspberry jam and powdered sugar

Raspberry Crumble Bars


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  • Author: Myla
  • Total Time: 55 minutes
  • Yield: 12 bars 1x
  • Diet: Vegetarian

Description

Buttery raspberry crumble bars with a sweet-tart fruit filling and golden oat crumble topping.


Ingredients

Scale

1 1/2 cups flour

1 cup oats

3/4 cup brown sugar

1/2 teaspoon baking powder

1/4 teaspoon salt

3/4 cup butter melted

2 cups raspberries

1/3 cup sugar

1 tablespoon lemon juice

2 teaspoons cornstarch

1/2 teaspoon vanilla extract


Instructions

1. Mix dry crumble ingredients.

2. Add butter and vanilla.

3. Press half into pan.

4. Mix raspberry filling.

5. Spread filling over crust.

6. Top with crumble.

7. Bake until golden.

8. Cool and slice.

Notes

Cool completely before cutting.

Use parchment for easy removal.

Adjust sugar based on berry tartness.

Store chilled for best texture.

  • Prep Time: 15 minutes
  • Cook Time: 40 minutes
  • Category: Dessert
  • Method: Baking
  • Cuisine: American

Nutrition

  • Serving Size: 1 bar
  • Calories: 210 kcal
  • Sugar: 14 g
  • Sodium: 85 mg
  • Fat: 9 g
  • Saturated Fat: 5 g
  • Unsaturated Fat: 3 g
  • Trans Fat: 0 g
  • Carbohydrates: 30 g
  • Fiber: 2 g
  • Protein: 2 g
  • Cholesterol: 20 mg

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