Print
clock clock iconcutlery cutlery iconflag flag iconfolder folder iconinstagram instagram iconpinterest pinterest iconfacebook facebook iconprint print iconsquares squares iconheart heart iconheart solid heart solid icon
raspberry crumble bars with a crumbly streusel topping, vibrant red raspberry filling, and a golden-brown crust, arranged on white parchment paper.

One-Bowl Raspberry Oatmeal Crumble Bars


  • Author: Samantha Brooks
  • Total Time: 42 minutes
  • Yield: 916 Bars 1x
  • Diet: Vegetarian

Description

The perfect blend of buttery, chewy oats and sweet-tart fruit filling. These bars feature a simple ‘one-bowl’ dough that serves as both the crust and the crumble topping. Sandwiching a thick ribbon of vibrant raspberry preserves, these easy, pantry-friendly bars are a gourmet bakery-quality find.


Ingredients

Scale

The Oat Dough (Crust & Crumble)

  • 1 cup all-purpose flour
  • 3/4 cup old-fashioned whole-rolled oats
  • 1/2 cup unsalted butter, melted
  • 1/2 cup granulated sugar + 1/4 cup light brown sugar
  • 1 tsp vanilla extract, pinch of salt

The Filling

  • 12 oz (approx. 1 cup) raspberry preserves

Instructions

Prep: Preheat oven to 350°F. Line an 8-inch square pan with foil and spray with cooking spray.

Dough: Melt butter; whisk in sugars and vanilla. Stir in flour, oats, and salt until clumpy.

Base: Reserve 1 cup of dough. Press the remaining dough firmly into the pan to create an even crust.

Layer: Spread raspberry preserves evenly over the crust to the edges.

Crumble: Squeeze the reserved dough into clumps and sprinkle over the preserves.

Bake: Bake for 30–32 mins until edges are set. Cool completely (2 hours) before slicing.

Notes

Oat Selection: Use old-fashioned rolled oats; quick oats absorb too much moisture and create a sandy, dry texture.

The ‘Squeeze’ Technique: Squeezing dough in your palm before sprinkling creates professional, rustic crumble chunks.

Patience for Slicing: Cooling allows the pectin in the preserves to re-set, ensuring clean, sharp squares.

  • Prep Time: 10 minutes
  • Cook Time: 32 minutes
  • Category: Dessert / Snack Bars
  • Method: One-Bowl / Baking
  • Cuisine: American

Nutrition

  • Serving Size: 1 Bar (of 16)
  • Calories: 210
  • Sugar: 22
  • Sodium: 45
  • Fat: 7
  • Saturated Fat: 4
  • Unsaturated Fat: 3
  • Trans Fat: 0
  • Carbohydrates: 34
  • Fiber: 1
  • Protein: 2
  • Cholesterol: 15

Keywords: raspberry oatmeal bars, oat crumble bars, easy jam bars, one bowl dessert, raspberry preserves recipe, chewy oatmeal squares, lunchbox treats