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3 Ingredient Oatmeal Cookies Recipe

Megan
3 ingredient oatmeal cookies are soft and chewy cookies made with only three simple, healthy ingredients. These banana cookies with oats are quick and easy to make. Just mash, mix, scoop, bake and enjoy.
5 from 3 votes
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Prep Time 10 minutes
Cook Time 10 minutes
Resting Time 20 minutes
Total Time 40 minutes
Course Breakfast, Dessert, Snack
Cuisine American
Servings 18 cookies

Equipment

  • 1 - 2 baking sheets
  • 1 - 2 sheets parchment paper
  • 1 mixing bowl
  • 1 fork and flexible spatula or spoon
  • 1 medium (2 tablespoon, 30 ml) cookie scoop optional

Ingredients
  

  • 1½ cups mashed banana about 3 mediu bananas
  • ½ cup (128 g) peanut butter
  • 2 cups (160 g) rolled oats use GF if needed
  • 1 teaspoon vanilla extract, optional
  • ¼ teaspoon salt, optional
  • ½ cup (85 g) chocolate chips, optional

Instructions
 

  • Preheat the oven to 350 F (177 C). Line two large baking sheets with parchment paper.
  • In a large bowl, mash 3 medium bananas until mostly smooth with a few lumps. Once the bananas are mashed, stir in the peanut butter and vanilla extract (if using) until smooth and well combined. Stir in the oats and chocolate chips (if using) until well combined. 
    1½ cups mashed banana, ½ cup (128 g) peanut butter, 2 cups (160 g) rolled oats , 1 teaspoon vanilla extract, optional , ¼ teaspoon salt, optional, ½ cup (85 g) chocolate chips, optional
  • Cover the banana peanut butter oat cookie dough and rest while the oven continues to preheat. I suggest allowing the cookie dough to rest for 20 - 30 minutes. 
    When the cookies are ready to bake, use a medium cookie scoop to drop 2 tablespoon sized oat cookie dough onto the lined baking sheet. The cookies will not spread much while baking. If you prefer slightly flatter cookies, press the tops of the cookies down slightly into a disk shape. Top with more chocolate chips if you like.
  • Bake the three ingredient oatmeal cookies for 10 - 12 minutes or until the edges are set and lightly golden brown. 
    Cool the cookies on the cookie sheet for 15 minutes. Transfer the cookies to a cooling rack to cool to room temperature and enjoy.

Notes

Store: Place the cookies in an airtight container in the fridge for up to 5 days. 
See the Variations section of the blog post to make these 3 ingredient oatmeal cookies without bananas.
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