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Easy One Bowl Oatmeal Cookies: Simple No-Mixer Recipe for Perfect Treats

This easy oatmeal cookie recipe requires just one bowl and no mixer, making it perfect for busy families and beginner bakers. The cookies come out chewy with crispy edges and can be ready in under 30 minutes using simple pantry ingredients.
Prep Time 15 minutes
Cook Time 12 minutes
Total Time 27 minutes
Calories: 120

Ingredients
  

Ingredients
  • 1 cup all-purpose flour
  • 1 teaspoon baking soda
  • 1/2 teaspoon salt
  • 1/2 cup unsalted butter, softened
  • 1/2 cup granulated sugar
  • 1/2 cup brown sugar, packed
  • 1 large egg
  • 1 teaspoon vanilla extract
  • 1 1/2 cups old-fashioned oats
  • 1/2 cup raisins or chocolate chips (optional)

Method
 

Instructions
  1. Preheat your oven to 350°F (175°C) and line a baking sheet with parchment paper.
  2. In a large mixing bowl, combine the softened butter, granulated sugar, and brown sugar. Use a wooden spoon or spatula to mix until well combined and creamy.
  3. Add the egg and vanilla extract to the butter-sugar mixture. Stir vigorously until the egg is fully incorporated and the mixture is smooth.
  4. Sprinkle the flour, baking soda, and salt over the wet ingredients. Gently fold everything together until just combined – be careful not to overmix.
  5. Stir in the oats and any optional add-ins like raisins or chocolate chips. The dough will be thick and slightly sticky.
  6. Using a tablespoon or cookie scoop, drop rounded balls of dough onto the prepared baking sheet, spacing them about 2 inches apart.
  7. Bake for 10-12 minutes, or until the edges are golden brown and the centers are set. The cookies will continue to firm up as they cool.
  8. Let the cookies cool on the baking sheet for 5 minutes before transferring them to a wire rack to cool completely.

Notes

Butter should be properly softened (cool to touch but yields when pressed). Don't overbake - cookies will continue cooking on hot baking sheet. Can be customized with dried cranberries, nuts, or coconut flakes. Store in airtight container for up to 5 days or freeze dough balls for 3 months.