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Close up of blueberry oatmeal marshmallow cookie with several other cookies blurred in background.

Blueberry Oatmeal Marshmallow Cookies

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Prep Time: 1 hour 15 minutes
Cook Time: 10 minutes
Total Time: 1 hour 25 minutes
Servings: 36

Ingredients

  • 1 cup butter softened
  • 1 cup white granulated sugar
  • 1 cup brown sugar packed
  • 2 eggs
  • 1 tsp vanilla extract
  • 2 cups all-purpose flour
  • 1 tsp baking soda
  • 1 tsp salt
  • 1-1/2 tsp ground cinnamon
  • 2 cups quick cooking oats
  • 1 cup dried blueberries
  • 1 cup mini marshmallows plus extra for topping cookies

Instructions

  • Using a stand mixer, cream butter, granulated sugar, and brown sugar together for one minute. Then add eggs into the mixture one at a time, mixing on low. Add vanilla to the bowl and then begin adding flour, baking soda, salt, and cinnamon. Mix well, then add oats, dried blueberries, and mini marshmallows. Mix until just incorporated and chill for one hour in the refrigerator
  • Preheat oven to 375 degrees Fahrenheit. Grease the baking sheet. Then, using a medium cookie scoop (holds about 1.5 tbsp of dough) begin scooping the cookie dough and placing it on the baking sheet (keeping them about 2-inches spaced apart). Once all the cookies are placed on the baking sheet begin to add 2-3 mini marshmallows per cookie--flattening them into the cookie. Place the remaining dough in the refrigerator while the first batch of cookies bake.
  • Bake the cookies for 10 minutes or until just golden brown. Then remove from the oven, let them sit for an additional 5-10 minutes on the baking sheet (they will continue to cook on the sheet even after leaving the oven). Lastly, place them on a cookie cooling rack. Repeat the step above, until all of your cookie dough has been made.
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