In small bowl, combine flour, baking powder and salt. In medium bowl, beat butter and sugar with electric mixer until light and fluffy. Add egg and almond extract; mix well. Add flour mixture alternately with milk; blend until just combined. Fill muffin cups with about 1 tablespoon batter. Bake 15 to 16 minutes or until firm to the touch. Cool in pan 5 minutes; remove to cooling grid to cool. Ice with buttercream.