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Oatmeal bars in a black square baking pan topped with peanut butter and sliced bananas

Peanut Butter Banana Breakfast Oatmeal Bars

These 3 ingredients peanut butter banana breakfast oatmeal bars makes the perfect grab-and-go breakfast or snack. Vegan, healthy yet really delicious !
4.43 from 28 votes
Prep Time 10 mins
Cook Time 20 mins
Total Time 30 mins
Course Breakfast, Snack
Cuisine American
Servings 12 bars
Calories 175 kcal


  • 3 cups rolled / quick oats use gluten-free if needed
  • ½ cup natural smooth peanut butter
  • 4 medium ripe bananas about 400g / 14 oz
  • pinch of salt ( if using unsalted peanut butter )


  • Preheat oven to 180c / 360f . Grease / line a 8x8 square baking pan.
  • Using a fork or potato masher, mash the bananas until smooth. A few small chunks here and there is ok.
  • In a mixing bowl, combine the mashed bananas and peanut butter. Mix well.
  • Add in the oats and salt. Mix until everything is well incorporated. Then, transfer the mixture to the baking pan. Using the back of a spoon or spatula, gently press down the mixture so that it is evenly distributed throughout the pan.
  • Bake it in the oven for 20-25 minutes, or until a toothpick comes out clean and the sides are golden brown.
  • Remove it from the oven and let it cool down completely before slicing. Optionally, drizzle it with extra peanut butter before serving !


Oat bars can be stored in the fridge for up to a week, and in the freezer for 3 months . To freeze,  let them cool down completely first. Then, arrange them on a large plate / tray in a single layer. Pop them into the freezer for 1-2 hours, or until they are frozen. Now, feel free to transfer them to any sealed containers or ziplock bags. 
If you prefer them to be super sweet, feel free to add in 2-4 tablespoon of your preferred sweetener. 


Calories: 175kcalCarbohydrates: 25gProtein: 6gFat: 7gSaturated Fat: 1gSodium: 51mgPotassium: 284mgFiber: 4gSugar: 6gVitamin A: 25IUVitamin C: 3mgCalcium: 17mgIron: 1mg
Keyword oat bars, oats
Did you make this recipe ?Tag @myplantifulcooking on Instagram !