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Classic Blueberry Oatmeal Cookies

Delicious and comforting cookies filled with blueberries and oats, perfect for snacks or desserts.
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Prep Time 15 minutes
Cook Time 14 minutes
Total Time 30 minutes
Servings: 24 cookies
Course: Dessert, Snack
Cuisine: American
Calories: 150
Ingredients Method Notes

Ingredients
  

Wet Ingredients
  • 1 cup unsalted butter, softened Brings richness and a tender texture.
  • 1 cup brown sugar, packed Adds depth and a soft chew.
  • 1/2 cup granulated sugar Balances the sweetness and helps with crisp edges.
  • 2 large eggs Bind and add lift.
  • 2 teaspoons vanilla extract Fragrant and warm.
Dry Ingredients
  • 1 1/2 cups all-purpose flour Structure for the cookie.
  • 1 teaspoon baking soda Gentle rise.
  • 1/2 teaspoon salt Enhances all flavors.
  • 3 cups old-fashioned rolled oats The soul of the cookie, for texture and heartiness.
  • 1 teaspoon ground cinnamon (optional) Cozy, homey spice.
Mix-ins
  • 1 1/2 to 2 cups fresh blueberries (or frozen, do not thaw) Juicy pops in every bite.

Method
 

Baking Preparation
  1. Preheat your oven to 350°F (175°C) and line baking sheets with parchment paper.
  2. In a large bowl, cream the softened butter with brown and granulated sugar until light and fluffy.
  3. Beat in eggs one at a time, then stir in vanilla.
Mixing Ingredients
  1. Whisk together flour, baking soda, salt, and cinnamon in a separate bowl.
  2. Gradually blend the dry mixture into the butter mixture.
  3. Fold in the rolled oats until evenly distributed.
  4. Gently fold in blueberries, taking care not to crush them.
Baking the Cookies
  1. Scoop heaping tablespoons of dough onto the prepared sheets, leaving about 2 inches between cookies for spreading.
  2. Bake for 12–14 minutes, or until edges are golden but centers remain soft.
  3. Let cookies cool on the sheet for 5 minutes, then transfer to a wire rack to cool completely.

Notes

For best results, use old-fashioned oats and keep blueberries chilled until use to prevent color bleed. Store baked cookies in an airtight container for up to 4 days, or flash-freeze for longer storage.