To make ahead, assemble the strata, cover, and refrigerate overnight. Let stand at room temperature while the oven preheats. Bake, uncovered, as directed. Although sourdough has a nice subtle tanginess, French bread works, too.This warm breakfast casserole is a cheese lover's dream. Using mild fontina cheese in combination with the tart flavor of goat cheese gives a creamy texture with nearly half the fat as similar recipes. You can make this ahead of time, refrigerate overnight, and bake it the next day.