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Easy One Bowl Oatmeal Cookies - Simple No-Mixer Recipe

This recipe offers the ultimate convenience of making delicious oatmeal cookies with just one bowl and no special equipment. Perfect for busy families and beginner bakers, these cookies feature soft and chewy centers with slightly crisp edges, ready in under 30 minutes with minimal cleanup.
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Prep Time 15 minutes
Cook Time 12 minutes
Total Time 27 minutes
Calories: 120
Ingredients Method Notes

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 baking sheets 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 your prepared baking sheets, spacing them about 2 inches apart.
  7. Bake for 10-12 minutes, or until the edges are golden brown and the centers look 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 (room temperature) but not melted. Don't overbake - cookies will continue cooking on the hot baking sheet. Store in airtight container for up to 5 days or freeze for 3 months. Can be customized with cinnamon, nuts, or different mix-ins.