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Delicious homemade Oatmeal Cream Pies with creamy filling between oatmeal cookies

Oatmeal Cream Pies

Chewy oatmeal cookies filled with fluffy marshmallow buttercream, these Oatmeal Cream Pies are a nostalgic treat perfect for any occasion.
Prep Time 30 minutes
Cook Time 12 minutes
Total Time 42 minutes
Course Dessert, Snack
Cuisine American
Servings 12 servings
Calories 250 kcal

Ingredients
  

For the cookies

  • 1 cup unsalted butter, softened
  • 1 cup packed light brown sugar
  • 1/2 cup granulated sugar
  • 2 large eggs
  • 1 teaspoon vanilla extract
  • 1 1/4 cups all-purpose flour
  • 1 teaspoon baking soda
  • 1/2 teaspoon salt
  • 1 teaspoon ground cinnamon
  • 3 cups old-fashioned rolled oats Use old-fashioned for best texture.

For the filling

  • 1/2 cup vegetable shortening, softened
  • 2 cups powdered sugar Use store-brand for budget-friendly options.
  • 1/3 cup marshmallow fluff
  • 1 teaspoon vanilla extract

Instructions
 

Preparation

  • Preheat oven to 350°F (175°C) and line baking sheets with parchment paper.
  • In a large bowl, cream together butter, brown sugar, and granulated sugar until light and fluffy.
  • Beat in eggs one at a time, then stir in vanilla extract.
  • In a separate bowl, whisk together flour, baking soda, salt, and cinnamon.
  • Gradually add dry ingredients to wet ingredients, mixing until just combined.
  • Fold in oats until evenly distributed throughout the dough.
  • Drop tablespoonfuls of dough onto prepared baking sheets, spacing them about 2 inches apart.
  • Bake for 10 to 12 minutes or until edges are golden and centers are set.
  • Allow cookies to cool on baking sheets for 5 minutes, then transfer to wire racks to cool completely.

Filling Preparation

  • In a bowl, beat together butter, shortening, powdered sugar, marshmallow fluff, and vanilla extract until smooth and creamy.

Assembly

  • Spread or pipe about 2 tablespoons of filling onto the flat side of one cookie and top with another cookie to form a sandwich.

Notes

Store assembled oatmeal cream pies in an airtight container at room temperature for up to 3 days. For a make-ahead treat, freeze plain cookies or assembled pies.
Keyword Comfort Food, cookies, desserts, marshmallow filling, Oatmeal Cream Pies