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Hand holding a fudgy oatmeal brownie square with oats and chocolatey crumb

Oatmeal Brownie

Fudgy baked oatmeal brownie squares made with peanut butter, maple syrup, cocoa, and rolled oats. Easy, one-bowl, and perfect for slicing.
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Prep Time 10 minutes
Cook Time 30 minutes
chill time 30 minutes
Total Time 1 hour 10 minutes
Servings: 9 squares
Course: Dessert
Cuisine: American
Calories: 240
Ingredients Equipment Method Nutrition Video Notes

Ingredients
  

  • 1/3 cup 80 g Homemade Peanut butter or store-bought
  • 1/2 cup 120 g Maple syrup
  • 1/4 teaspoon Salt
  • 2 cups 480 ml Milk of your choice
  • 1 teaspoon Vanilla extract
  • 2 cups 180 g Rolled oats
  • 1/4 cup 30 g Cocoa powder
  • 1 tablespoon Ground flaxseed optional
  • 1 teaspoon Baking powder
  • 1/3 cup 60 g Chocolate chips (optional)

Equipment

  • 8-inch square baking pan
  • Parchment paper
  • Large mixing bowl
  • Whisk
  • Spatula
  • Measuring cups and spoons

Method
 

  1. Preheat oven to 350°F (175°C). Line an 8-inch square pan with parchment paper.
  2. In a large bowl, whisk peanut butter and maple syrup until smooth.
  3. Add milk and vanilla extract; whisk until combined.
  4. Stir in rolled oats, cocoa powder, ground flaxseed (if using), baking powder, and salt until thick and evenly mixed.
  5. Pour batter into the prepared pan and spread evenly. Sprinkle chocolate chips on top if using.
  6. Bake 25–30 minutes, until set in the center.
  7. Cool completely, then lift out and slice into squares.

Nutrition

Calories: 240kcalCarbohydrates: 33gProtein: 8gFat: 10gSaturated Fat: 3gPolyunsaturated Fat: 3gMonounsaturated Fat: 4gCholesterol: 8mgSodium: 135mgPotassium: 170mgFiber: 5gSugar: 18gVitamin A: 120IUCalcium: 90mgIron: 2mg

Video

Notes

  • Preheat oven to 350°F (175°C). Line an 8-inch square pan with parchment paper.
  • In a large bowl, whisk peanut butter and maple syrup until smooth.
  • Add milk and vanilla extract; whisk until combined.
  • Stir in rolled oats, cocoa powder, ground flaxseed (if using), baking powder, and salt until thick and evenly mixed.
  • Pour batter into the prepared pan and spread evenly. Sprinkle chocolate chips on top if using.
  • Bake 25–30 minutes, until set in the center.
  • Cool completely, then lift out and slice into squares.

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