This crave-worthy French toast casserole is the epitome of comfort food made easy. It’s jam-packed with sweet and eggy challah bread, fresh or frozen blueberries, and plenty of warm spices, and baked until the center is custardy and the top is golden and crisp. But why stop there? Once it’s out of the oven, you’ll cover it in a tangy cream cheese glaze to give it all the cheesecake vibes.