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3-Ingredient Oatmeal Cookies Recipe
4.4 from 666 votes

3-Ingredient Oatmeal Cookies Recipe

These simple three-ingredient oatmeal cookies combine ripe mashed bananas, creamy almond or peanut butter, and quick or rolled oats to form a sticky dough that bakes into soft cookies with a tender, chewy texture. Optional ingredients like vanilla extract, salt, or chocolate chips can enhance flavor, but the base recipe remains wholesome and minimal. The cookies maintain their shape on baking and develop lightly golden edges, suitable for a quick homemade treat without added sugar or flour.

Prep Time
5 mins
Cook Time
10 mins
Total Time
15 mins
Servings: 10 Large or 16 Small Cookies
Calories: 138 kcal
Course: Main Course
Cuisine: American

Ingredients

  • 3 large banana mashed (1 ½ cups, ripe
  • ½ cup (128g) almond butter or peanut butter
  • 2 cups (200g) quick oats or rolled oats**
Optional Additions:
  • ⅓ to ½ cup chocolate chips
  • 1 tsp vanilla extract
  • 1 pinch salt sea salt

Instructions

    Cup of Yum
  1. Preheat the oven to 350 degrees Fahrenheit and line a large baking sheet with parchment paper (or spray it with cooking oil).
  2. Mash the banana into a mixing bowl until most of the chunks are out (it can be a little chunky just not overly chunky).
  3. Add the peanut butter and oats and mix everything together until a sticky dough forms.
  4. Use a spoon to drop the cookie dough onto the baking sheet, creating any size of cookie you like (note very small cookies will require less bake time). The cookies won’t spread, so form them into the shape you want them to be in - I stick with round mounds.
  5. Bake the cookies for 10 to 12 minutes, or until they are slightly golden-brown around the edges.
  6. Allow the cookies to cool for at least 15 minutes before using a spatula to remove them from the baking sheet to serve.

Notes

  • Use sweetened nut butter for sweeter cookies; choose unsweetened for no refined sugar added.
  • Gluten-free oats can be used for dietary restrictions.
  • Optional mix-ins like chocolate chips or vanilla extract enhance flavor and texture.
  • Form cookies into desired size and shape as they do not spread while baking.

Nutrition Information

Serving 1of 10 Calories 138kcal (7%) Carbohydrates 16g (5%) Protein 4g (8%) Fat 8g (12%) Fiber 3g (12%) Sugar 5g (10%)

Nutrition Facts

Serving: 10 Large or 16 Small Cookies

Amount Per Serving

Calories 138

% Daily Value*

Serving 1of 10
Calories 138kcal 7%
Carbohydrates 16g 5%
Protein 4g 8%
Fat 8g 12%
Fiber 3g 12%
Sugar 5g 10%

* Percent Daily Values are based on a 2,000 calorie diet.