Be ready for hand washing afterward: With peanut butter as the main ingredient, this dough is oily. Parents can beat the cookie dough ingredients and leave the shaping to the kids. Use a baby-food or demitasse spoon to spoon jam into thumbprints.
1/3 cup all-purpose flour (about 1 1/2 ounces)
3/4 cup creamy peanut butter
3/4 cup sugar
1 egg, lightly beaten
6 tablespoons strawberry jam
How to Make It
Lightly spoon flour into a dry measuring cup; level with a knife. Place peanut butter, sugar, and egg in a medium bowl; beat with a mixer at medium speed until smooth. Add flour; stir well. Shape dough into 36 (1-inch) balls; place 1-inch apart on baking sheets coated with cooking spray. Press thumb into center of each cookie, leaving an indentation. Cover and chill 3 hours.
Preheat oven to 375°.
Bake cookies at 375° for 12 minutes or until golden. Remove from pans; cool on wire racks. Spoon 1/2 teaspoon jam into the center of each cookie.