Do-Si-Dos Cookies

Do-Si-Dos cookies are oatmeal cookies with peanut butter filling. They are a Girl Scout Do-Si-Do copycat recipe!

Course Dessert

Cuisine American

Prep Time 20

Cook Time 10

Total Time 30

Servings cookie sandwiches

Calories 271kcal

Preheat oven to 350 F. Line two large baking sheets with parchment paper or silicone baking mats; set aside.
In the bowl of a stand mixer fitted with a paddle attachment, beat butter and sugars together until light and creamy.
½ cup butter, ¾ cup brown sugar, ¼ cup granulated sugar
Beat in the egg until well-combined.
1 large egg
Stir in the vanilla extract until combined.
1 teaspoon vanilla extract
Add the oats, flour, baking powder, baking soda, and salt to the butter mixture, stirring on low speed until just incorporated.
1 ¾ cups rolled oats, 1 cup all-purpose flour, ½ teaspoon baking powder, ½ teaspoon baking soda, ¼ teaspoon salt
Drop cookies by tablespoonful onto prepared baking sheets, spacing dough about 2-inches apart.
Bake for 10-15 minutes, or until they’re golden brown.
Allow cookies to cool on the cookie sheet for 5 minutes.
Then transfer to a wire rack to cool completely before filling.
To prepare the filling, beat together butter, peanut butter, and powdered sugar in the bowl of a stand mixer fitted with the paddle attachment.
2 tablespoons butter, ½ cup + 2 tablespoons smooth peanut butter, 1 cup powdered sugar
Stir in vanilla extract and salt.
½ teaspoon vanilla extract, ⅛ teaspoon salt
Add milk, and beat to combine. Filling should be at a spreadable consistency.
3 tablespoons milk
Once cookies are cool, turn half cookies flat side up.
Spread those cookies with peanut butter filling.
Top filling with another cookie.

Butter: I use salted butter in this recipe. If using unsalted butter, increase the salt to 1/2 teaspoon in the cookies and add an extra pinch of salt to the filling.
Brown sugar: I use light brown sugar. You could also use dark brown sugar if you prefer.
Oats: I haven't tried using quick oats in this recipe.
Peanut butter: I don't recommend using natural peanut butter in the filling. It's difficult to get the correct consistency when using natural peanut butter.
Milk: Skim to whole milk will work. You can also use a nondairy milk like almond milk.
Nutrition values are estimates.