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Two raspberry crumble bars stacked on a white plate with fresh raspberries.
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5 from 2 votes

Raspberry Oatmeal Crumble Bars

These vibrant Raspberry Oatmeal Crumble Bars are made with a buttery brown sugar oat crumble and a sweet yet tart raspberry filling.
Prep Time30 minutes
Cook Time40 minutes
Total Time1 hour 10 minutes
Servings: 16 bars
Calories: 204kcal
Author: Naomi Andres

Equipment

  • 9x9-inch baking pan
  • parchment paper
  • mixing bowls
  • measuring cups & spoons

Ingredients

  • 1 cup rolled oats
  • 1 cup quick oats
  • 1 cup all-purpose flour
  • ¾ cup brown sugar, packed
  • 1 ½ teaspoons baking powder
  • ¾ cup salted butter *melted
  • 2 cups raspberries (fresh or frozen, thaw if using frozen)
  • ¼ cup granulated white sugar
  • 1 tablespoon cornstarch
  • 2 tablespoons lemon juice

Instructions

  • Preheat the oven to 350℉. Line a 9X9-inch pan with parchment paper, leaving parchment paper to hang over the sides of the pan. 
  • Combine the oats, flour, brown sugar, and baking powder in a medium-sized bowl. Pour in the melted butter and stir until crumbly but moist. Pour approximately ⅔ of the mixture into the prepared pan and press to form a crust. Set the remaining mixture aside for the topping later.
  • In another bowl stir together the raspberries, sugar, cornstarch, and lemon juice. Mash and muddle the raspberries until jammy looking. Pour the filling over top of the crust and spread it around. Crumble the remaining crust mixture over top.
  • Bake in the preheated oven for 30-40 minutes or until the filling is bubbly and the topping is golden. Let cool fully before serving as bars or serve it warm with ice cream (like a crisp).

Notes

  1. Add ½ teaspoon of salt to the recipe if using unsalted butter.
Store leftover bars once they have cooled fully in an airtight container or covered in the pan they were baked in for up to 3 days.
 

Nutrition

Calories: 204kcal | Carbohydrates: 29g | Protein: 2g | Fat: 9g | Saturated Fat: 6g | Polyunsaturated Fat: 1g | Monounsaturated Fat: 2g | Trans Fat: 0.3g | Cholesterol: 23mg | Sodium: 112mg | Potassium: 86mg | Fiber: 2g | Sugar: 14g | Vitamin A: 271IU | Vitamin C: 5mg | Calcium: 43mg | Iron: 1mg