Christmas Trees
["1 1/2 c. butter or margarine, softened", "1 c. sugar", "1 (3 oz.) pkg. lime gelatin", "1 egg", "1 tsp. vanilla", "4 c. all-purpose flour", "1 tsp. baking powder", "red and green sugar crystals (garnish)"]
["Cream butter in large mixing bowl; gradually add sugar and gelatin, beating at medium speed.", "Add egg and vanilla; beat well. Combine flour and baking powder; add to creamed mixture and mix well.", "Use a cookie gun to shape dough as desired, following the manufacturer's instructions.", "Place cookies on ungreased cookie sheet.", "Garnish, if desired.", "Bake at 350\u00b0 for 12 to 15 minutes. Cool on wire rack."]
["butter", "sugar", "lime gelatin", "egg", "vanilla", "all-purpose", "baking powder", "red"]