Thumbprint cookies are a classic! They have a buttery flavor, filled with vanilla buttercream frosting, and topped with happy sprinkles for a special treat.

You'll only need a few simple ingredients to make this easy recipe. Let's get started!

Step 1. Mix butter and sugar in a mixing bowl until fluffy and light.

Step 2. Add the egg yolks and vanilla extract, and mix until combined.

Step 3. Gradually add the flour and mix just until combined.

Step 4. Finish mixing by hand or with a mixing spoon until a dough forms. Then cover and refrigerate.

Step 5. Roll dough into balls and place on pans using cookie scoop.

Step 6. Make an indentation in the center of each cookie with a wooden spoon or measuring spoon.

Step 7. Place one pan at a time in the oven, and bake for 10 to 12 minutes or until lightly browned.

Step 8. Beat butter, confectioners' sugar, milk, and vanilla together until combined and smooth.

Step 9. Transfer the frosting to a piping bag. Fill the indentations of the cookies with the frosting, then top with sprinkles.

Serve your Forsting-Filled Thumbprint Cookies with a glass of milk and dig in!

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