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Blueberry bars with fresh blueberries.
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Blueberry Oatmeal Bars

These easy Blueberry Oatmeal Bars feature a juicy blueberry filling with a buttery brown sugar crust and crumble topping.
Prep Time30 minutes
Cook Time30 minutes
Total Time1 hour
Servings: 16 bars
Calories: 188kcal
Author: Naomi Andres

Equipment

  • 9x9-inch baking pan
  • parchment paper
  • mixing bowl
  • whisk
  • pastry cutter
  • saucepan

Ingredients

  • 1 cup rolled oats
  • 1 cup all-purpose flour
  • ¾ cup brown sugar
  • 1 ½ teaspoons baking powder
  • ¾ cup salted butter * melted
  • 2 cups fresh or frozen blueberries
  • ¼ cup granulated white sugar
  • 1 tablespoon cornstarch
  • 1 teaspoon lemon zest
  • 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.
  • Whisk together the oats, flour, brown sugar, and baking powder in a large bowl. Mix in the melted butter to create a crumbly texture. Press ⅔ of this mixture into the prepared pan and set aside the rest for later.
  • In another bowl, stir together the blueberries, sugar, cornstarch, lemon zest, and lemon juice. Smooth the filling over top of the crust and crumble the reserved crust mixture over top.
  • Bake in the preheated oven for 35-40 minutes or until the topping is golden brown. Serve warm with ice cream or let cool fully before slicing into bars to serve. Enjoy!

Notes

  1. Add ½ teaspoon of salt if using unsalted butter.
Store covered or in an airtight container at room temperature for up to 3 days.
 

Nutrition

Calories: 188kcal | Carbohydrates: 26g | Protein: 2g | Fat: 9g | Saturated Fat: 6g | Polyunsaturated Fat: 0.5g | Monounsaturated Fat: 2g | Trans Fat: 0.3g | Cholesterol: 23mg | Sodium: 112mg | Potassium: 60mg | Fiber: 1g | Sugar: 15g | Vitamin A: 276IU | Vitamin C: 3mg | Calcium: 38mg | Iron: 1mg