What makes desserts sweet? Usually it's sugar, but in the desert, it's agave. For this pre-heat, the five bakers must use only agave as the sweetener in an assigned dessert -- a tart, a flourless cake, an ice cream sandwich, a doughnut or a cupcake. For the main heat, the bakers make succulent cakes that rival the real thing.

There's hidden beauty inside many things, even ugly ingredients. In this pre-heat, the remaining three bakers have to use so-called ugly ingredients to make beautiful desserts. In the main heat, the focus is on geodes, which look like rocks on the outside but have beautiful mineral formations inside. The bakers are tasked with creating vibrant and colorful geode cakes using handmade rock candy to win the title of Spring Baking Champion and the $50,000 prize.