brown sugar, firmly packed
oats, quick or old-fashioned, uncooked
all purpose flour
Heat oven to 350 degrees.
Beat butter and sugar in large bowl until fluffy.
Blend in egg and vanilla.
Add combined oats and flour; mix well.
Shape into 1" balls; roll in chopped nuts and place 2" apart on ungreased cookie sheet.
Make indentation in center of each ball with thumb.
Fill each thumbprint with about 1/4 teaspoon jelly.
Bake 12-15 minutes or until light golden brown.
Cool completely on wire rack and store loosely covered--makes about 3 dozen cookies.