Simple Spring Cupcake Recipe. Spring is here and if you are looking for one more adorable sweet treat, we have you covered! To start, make any cupcake recipe. Feel free to make white, chocolate, red velvet, whatever your heart desires. To add the grass, we recommend Wilton #233 grass tip. With this tip, adding grass is easy as can be. No fuss, no muss. Be sure the cupcakes are completely cooled before attempting to ice them.