Thumbprint cookies

6 tablespoons butter
1/4 cup peanut butter
2 tablespoons sugar
1/4 cup brown sugar
1 egg, separated
1 teaspoon vanilla
1 cup flour
3/4 cup chopped salted peanuts
1/2 cup jam

Preheat oven to 375 degrees. In a medium bowl, cream butter and peanut butter. Add sugars and egg yolk. Stir in vanilla. Add flour and stir to form soft dough. Roll cookies into small balls. Dip balls into egg white and roll in peanuts, if desired. (I skipped this step on some.) Poke a hole in the center of the cookie with the spoon handle. (The hole will expand in the oven.) Bake cookies for about 15-18 minutes, or until just beginning to color. Cool completely. Heat jam in microwave safe bowl. Spoon jam into cookies. Makes about 30.

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