Mom's Thumbprint Cookies
3/4 cup BUTTER, softened (don't even think about using margarine)
1/2 cup sugar
1 1/2 cup flour
1 egg yolk
Cream the butter and the sugar until creamy. Add in the egg yolk. Beat in the flour. Easy Peasy. These are little, dainty cookies, so shape the dough into small balls. (I use the small Pampered Chef cookie scoop.) Make a small indentation with your pinky in each ball of dough. Fill the indentation with jelly. (My mom told me she kept our baby spoon for just this job!) Don't overfill the indentations or the jelly will cook out and burn to your pan. My favorite is apricot jam. :)
Bake at 350 for 8-12 minutes. They should be just golden brown on the bottom and barely colored on the top. You might have to adjust the baking time to get the "browness" you like.
Don't say I didn't warn you: These are small enough to pop a few in your mouth every time you walk past the cookie jar, so consider having your jaw wired before preheating the oven.