1 cup butter, softened
3/4 cup sugar
1 large egg
1 tsp. vanilla
1/4 tsp. salt
2 1/2 cups flour
crushed candies, sorted by flavor/color
Cream butter and sugar; beat in egg until mixed, then vanilla and salt. Add flour until blended. Divide the dough in half, flatten each into a disk and cover in plastic wrap. Refrigerate overnight or place in freezer for about 20 minutes.
Remove dough. let warm slightly, and roll to 1/4 inch thickness.
Preheat oven to 375. Cover baking sheet with foil and coat with cooking spray. Cut out cookies with larger cookie cutters, then with smaller cutters (or a clean top to a soda bottle) cut shapes within each.
Place on cookie sheet and sprinkle candies inside.
You will want to make sure the candies all are inside the centers, or they will melt into the cookie. (Read: If you want a perfectly "unstained" cookie, this may not be the part for helpers!)
Bake 10-12 minutes. Let centers cool thoroughly before removing from the pan.