Decorate a forest of Christmas trees!

Transform brownie rounds into holiday-perfect trees with fluffy frosting and gumdrops. Here’s how: Transfer tinted frosting, in batches if necessary, to a large pastry bag fitted with a medium star tip. Assemble each tree by topping 1 brownie of each size with piped frosting, then stacking them. Sprinkle your trees with nonpareils and top off with gumdrop stars.