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A side closeup view of an oatmeal drop cookie topped with cinnamon. Oats are sprinkled around the cookie.

Oatmeal Drop Cookies

Tiffany
Oatmeal drop cookies are thick, bakery-style oatmeal cookies topped with a cream cheese and marshmallow fluff frosting.
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Prep Time 15 minutes
Cook Time 10 minutes
Refrigeration Time 1 hour
Total Time 1 hour 25 minutes
Course Desserts
Cuisine American
Servings 19 Cookies
Calories 199 kcal

Equipment

Ingredients
  

Oatmeal Drop Cookies

  • 6 tablespoons Butter room temperature
  • ½ cup Brown Sugar
  • ¼ cup Granulated Sugar
  • 1 Large Egg
  • 1 teaspoon Pure Vanilla Extract
  • 1 ¼ cup All-Purpose Flour
  • 1 tablespoon Cornstarch
  • 1 teaspoon Ground Cinnamon
  • ½ teaspoon Baking Powder
  • ½ teaspoon Baking Soda
  • ¼ teaspoon Salt
  • 1 ¼ cups Old-Fashioned Oats

Cream Pie Frosting

  • 6 tablespoons Butter room temperature
  • 3 tablespoons Cream Cheese room temperature
  • 2 tablespoons Marshmallow Creme
  • 1 teaspoon Pure Vanilla Extract
  • 1 ½ cups Powdered Sugar
  • Pinch of Salt
  • Ground Cinnamon optional topping

Instructions
 

Oatmeal Drop Cookies

  • In an electric mixer or a large bowl with a hand mixer, cream together butter and both sugars. Mix in egg and vanilla. Add flour, cornstarch, baking soda, ground cinnamon, salt, and old-fashioned oats.
  • Using a 1.5-tablespoon cookie scoop, add mounds of dough to a baking sheet lined with parchment paper.
  • Place the baking sheet in the refrigerator for 1 hour so that when they bake, they hold their shape.
  • After 1 hour, preheat the oven to 400℉. Place the baking sheet directly from the fridge into the oven. Bake for 9-10 minutes. Let cool.

Cream Pie Frosting

  • Add butter, cream cheese, and marshmallow creme to a stand mixer with a whisk attachment and whip until light and fluffy, about 5 minutes. Add vanilla. Slowly add powdered sugar, mix well. I like to whisk the frosting on high speed at the end to whip it again and give it more structure.
  • If your frosting is too thin, add a little powdered sugar. If it's too thick, add a little milk.
  • To frost, use a 1-tablespoon cookie scoop or spoon to add a dollop of frosting to each cookie. Sprinkle frosting with ground cinnamon.

Nutrition

Calories: 199kcalCarbohydrates: 29gProtein: 2gFat: 9gSaturated Fat: 5gPolyunsaturated Fat: 1gMonounsaturated Fat: 2gTrans Fat: 0.3gCholesterol: 30mgSodium: 140mgPotassium: 46mgFiber: 1gSugar: 18gVitamin A: 265IUVitamin C: 0.004mgCalcium: 22mgIron: 1mg