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Fastest Oatmeal Cookies Recipe - Easy One Bowl Method in 20 Minutes

This lightning-fast oatmeal cookie recipe delivers bakery-quality results in just 20 minutes using a simple one-bowl method with no chilling required. The cookies feature a perfect balance of chewy centers and slightly crisp edges, packed with wholesome oats and just the right amount of sweetness.
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Prep Time 10 minutes
Cook Time 12 minutes
Total Time 22 minutes
Calories: 120
Ingredients Method Notes

Ingredients
  

Ingredients
  • 1 cup all-purpose flour
  • 1 teaspoon baking soda
  • ½ teaspoon salt
  • ½ cup unsalted butter, softened
  • ½ cup granulated sugar
  • ½ cup brown sugar, packed
  • 1 large egg
  • 1 teaspoon vanilla extract
  • 1½ cups old-fashioned oats
  • ½ cup raisins or chocolate chips (optional)

Method
 

Instructions
  1. Preheat your oven to 350°F (175°C) and line two baking sheets with parchment paper.
  2. In a large mixing bowl, cream together the softened butter, granulated sugar, and brown sugar until light and fluffy (2-3 minutes with electric mixer or 3-4 minutes by hand).
  3. Beat in the egg and vanilla extract until well combined and smooth.
  4. Add the flour, baking soda, and salt to the same bowl and mix until just combined (do not overmix).
  5. Stir in the oats and any optional add-ins like raisins or chocolate chips until the thick dough comes together.
  6. Drop rounded tablespoons of dough onto the prepared baking sheets, spacing them about 2 inches apart (gently flatten slightly for thinner cookies).
  7. Bake for 10-12 minutes, or until edges are golden brown but centers still look slightly soft.
  8. Let cookies cool on baking sheet for 5 minutes before transferring to a wire rack to cool completely.

Notes

Use room temperature butter for best texture. Don't overbake - cookies will continue cooking on hot baking sheet. Store in airtight container for up to 5 days or freeze for 3 months.