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

These lightning-fast oatmeal cookies come together in one bowl with no chilling time and bake in just 12 minutes. Perfect for satisfying sweet tooth emergencies with their chewy texture and classic combination of rolled oats, cinnamon, and optional raisins or chocolate chips.
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Prep Time 8 minutes
Cook Time 12 minutes
Total Time 20 minutes
Calories: 120
Ingredients Method Notes

Ingredients
  

Ingredients
  • 1 cup all-purpose flour
  • 1 teaspoon baking soda
  • 1/2 teaspoon salt
  • 1 teaspoon ground cinnamon
  • 1/2 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 rolled oats
  • 1/2 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, whisk together the flour, baking soda, salt, and cinnamon
  3. Add the softened butter, granulated sugar, and brown sugar to the bowl and cream together until light and fluffy (about 2 minutes)
  4. Beat in the egg and vanilla extract until well combined
  5. Stir in the rolled oats and any optional add-ins like raisins or chocolate chips
  6. Drop rounded tablespoons of dough onto prepared baking sheets, spacing them about 2 inches apart
  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 wire rack to cool completely

Notes

Use butter that's softened but still cool to touch. Don't overmix once oats are added. Rotate baking sheets halfway through if baking two at once. Cookies freeze beautifully for up to 3 months.