Cream butter with extract; add brown sugar gradually, creaming until fluffy. Add eggs, one at a time, beating thoroughly after each addition.
Sift flour, baking powder, and salt together; add in thirds to creamed mixture, mixing until blended after each addition. Turn into a greased 15 x 10 x 1 inch jelly roll pan and spread evenly to edges.
Sprinkle a mixture of almonds and cinnamon over batter, then sprinkle with a mixture of red and green sugar.
Bake at 375°F 10 to 12 minutes.
Cut into bars while still warm. About 5 dozen cookies.