4-Ingredient Banana Oatmeal Bars are quick to prepare and make a great snack, breakfast, or healthy dessert. Bake a batch at the start of the week and enjoy them on repeat.
Inspired by a simple three-ingredient oatmeal cookie, I adapted the idea into bars that are portable and satisfying. These banana oat bars are naturally sweetened with ripe bananas, bound with nut butter, and textured with rolled oats — a soft, chewy bar similar to a thinner baked-oatmeal square.
If you prefer a crunchier granola-bar style, try a granola-based recipe instead. But for a tender, cake-like bite that still feels wholesome, these banana oatmeal bars are hard to beat.
Ingredients for Banana Oatmeal Bars:
Ripe bananas: The natural sweetener for these bars. Use very ripe bananas with brown spots — the riper, the sweeter and more flavorful the bars will be.
Almond butter or peanut butter: Unsweetened nut butter acts as the binder so no eggs or leavening are required. It also adds richness and a pleasant nutty flavor. Sunflower seed butter works as an allergy-friendly swap.
Rolled oats: Old-fashioned rolled oats give the best chewy texture and oat flavor. You can use gluten-free oats if needed. For a grain-free version, replace oats with chopped mixed nuts.
Chocolate chips: Small pockets of chocolate add indulgence. Use dairy-free chips to keep the recipe vegan or omit them for a lower-sugar option. Dried fruit also works in place of chocolate.
Optional additions:
Optional flavor boosts include 1 teaspoon ground cinnamon, 1 teaspoon vanilla extract, a pinch of sea salt, or up to 2/3 cup chopped walnuts or pecans.
How to make banana oatmeal bars:
Preheat the oven to 350°F and line a 9″ x 9″ baking pan with parchment paper (an 8″ x 8″ pan will also work).
Mash the ripe bananas in a bowl until mostly smooth and creamy.
Stir in the almond or peanut butter until fully combined and a thick, creamy mixture forms.
Fold in the rolled oats and chocolate chips (or your chosen mix-ins) until the ingredients are evenly distributed.
Transfer the mixture to the prepared pan and press it into an even layer.
Bake on the center rack for 18–25 minutes, until the edges are golden and the center is set. Let the bars cool completely in the pan before slicing to ensure clean pieces.
Storage: these dairy-free bars can sit wrapped on the counter for up to 2 days. Store leftovers in an airtight container in the refrigerator for up to one week, or freeze slices in a sealed bag for up to three months.
More banana-sweetened recipes:
- Healthy Carrot Cake Muffins
- 4-Ingredient Healthy Flourless Brownies
- 5-Ingredient Paleo Banana Bread Cookies
- Healthy Apple Muffins
- 4-Ingredient Healthy Samoa Cookies
That’s all — a simple, versatile recipe for healthy oatmeal bars that’s easy to customize. Enjoy them for breakfast, snack time, or a lighter dessert.
4-Ingredient Banana Oatmeal Bars
Ingredients
- 3 large ripe bananas (about 1 1/2 cups mashed)
- 1/2 cup (120 g) creamy almond butter* (or peanut/sunflower seed butter)
- 2 cups (200 g) rolled oats
- 1 cup (170 g) chocolate chips (optional)
Optional additions:
- 1 tsp pure vanilla extract
- 1/4 tsp sea salt
- 1 tsp ground cinnamon
- 2/3 cup (100 g) chopped walnuts or pecans
Instructions
- Preheat oven to 350°F and line a 9″ x 9″ baking pan with parchment paper.
- Mash the bananas until mostly smooth.
- Stir in the almond butter until well combined.
- Mix in the rolled oats and chocolate chips (or other mix-ins).
- Press the mixture into the prepared pan in an even layer.
- Bake for 18–25 minutes, until the edges are golden and the center is set. Cool completely before slicing.
Notes
*Use peanut butter or sunflower seed butter instead of almond butter if preferred.
Nutrition
Nutrition information is an approximation.
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