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Easy One Bowl Oatmeal Cookies - Simple No Mixer Recipe

This simple oatmeal cookie recipe requires just one bowl and no mixer, making it perfect for busy families and beginner bakers. These chewy, golden-brown treats come together in minutes with minimal cleanup and offer a perfect balance of sweetness and wholesome oats.
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Prep Time 15 minutes
Cook Time 12 minutes
Total Time 27 minutes
Servings: 24 servings
Calories: 120
Ingredients Method Notes

Ingredients
  

Ingredients
  • 1 cup all-purpose flour
  • 1 teaspoon baking soda
  • 1/2 teaspoon salt
  • 1 teaspoon ground cinnamon
  • 1 cup unsalted butter, softened
  • 3/4 cup brown sugar
  • 1/2 cup granulated sugar
  • 2 large eggs
  • 1 teaspoon vanilla extract
  • 3 cups old-fashioned rolled oats
  • 1 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 your large mixing bowl, combine the softened butter, brown sugar, and granulated sugar. Use a sturdy spoon or spatula to mix until well combined and creamy.
  3. Add the eggs one at a time, mixing well after each addition. Stir in the vanilla extract until fully incorporated.
  4. Sprinkle the flour, baking soda, salt, and cinnamon over the wet ingredients. Gently fold everything together until just combined.
  5. Add the rolled oats and any optional mix-ins like raisins or chocolate chips. Mix until everything is evenly distributed throughout the dough.
  6. Drop rounded tablespoons 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

For the chewiest texture, slightly underbake cookies by 1-2 minutes. Make sure butter is properly softened - it should leave a slight indentation when pressed but not be melted. For thicker chewier cookies, chill the dough for 30 minutes before baking to prevent spreading.