If you’d like to bring fun, retro fashion to your sweets, tie-dye them! In just minutes, cakes, marshmallows and even waffles can get groovy with eye-popping color. You’ll need a few prepackaged ingredients and an assortment of food color to get started. A good way to choose your colors is to remember the acronym ROYGBIV: red, orange, yellow, green, blue, indigo and violet. Use all the colors of the rainbow! Disposable cups and bowls will make mixing colors and cleanup a breeze; just be sure to use biodegradables to keep these projects eco-friendly.

Whoopie pies are so easy to make: Just add an extra egg to a standard box of cake mix. Divide the batter into 4 to 6 even portions, then tint each batter with a food color. Drop a spoonful of each color batter into the cavities of a greased whoopie pie pan and use a skewer to swirl the colors. When the pies are baked and cooled, fill them with whipped topping or homemade whipped cream.

To make these groovy marshmallows, grab a bag of extra-large puffs and dip the tines of a fork into undiluted liquid food color. Press the tines randomly onto the surface of the marshmallows, then place them on a wire rack to dry. Display them on skewers, or pile them high on a plate; they’ll become part of the table decor!

Tie-dyed birthday cake will always be welcome at a party. To make this single-layer cake, you’ll need 1 box of white cake mix and as many different food colors as you can handle. Divide and tint the batter with the colors, then spoon the colors randomly into a 9-by-13-inch baking dish. Use a butter knife to swirl the colors together before baking. When the cake is cool, top with ready-made vanilla frosting and sprinkles.