I originally got this idea from an issue of Food Network Magazine, but decided they had really missed an opportunity with their Peep Cake. I took their recipe one step further and filled my Giant Peep Cake with a brood of store bought marshmallow Peeps!
Use your favorite cake recipe for the body of the cake. You'll want to double it up. I used two box mixes! If you want to know a secret, often when I "test-kitchen" cake recipes at work, I'll throw in one that's straight from a box. It's usually everyone's favorite, which is part disappointment, and part relief, as it means when I need to throw together a cake super quick, no one will mind if I make one from a box. Shhhh.......
The frosting here really tastes like melted down peeps. I recommend trying this, although the texture can be a bit tricky, and a buttercream, or even pre-packaged frosting would be much easier to work with. But if you're game, try this:
1 1/2 cups sugar
1/2 teaspoon cream of tartar
3 large egg whites
1 teaspoon vanilla extract
1 teaspoon yellow food coloring
Chocolate for eyes
To shape the body you'll want to use a variety of baking vessels:
9x13" baking pan
1-quart oven safe bowl
2 1/2-quart oven safe bowl
Make sure to grease and flour the pans well.
This recipes makes a solid, delicious, giant peep cake. But if you're feeling zany, you can hollow it out and fill it with tiny peeps and surprise and delight your guests! I was able to fit 15 peeps in the cavity I created.