1 1/2 cups flour
1/2 cup butter, at room temperature
1/2 cup sugar
1 egg, at room temperature
zest from a lemon
Preheat oven to 350. Line a cookie sheet with parchment paper. Cream together the butter and sugar. Add the egg, flour and zest. Mix until a thick dough forms. Refrigerate until firm, if needed. Roll out onto a floured surface to about 1/4 inch thick. Use a 3 inch biscuit cutter to make rounds.
Center 1 tablespoons jam into each cookie. Fold in half and pinch shut. Sprinkle with pearl sugar. Bake for 12-15 minutes or until golden brown.
Remove a wire rack to cool.