Give Mom a morning off, and show how much you care with this amazing French toast casserole. This is super easy to make and perfect for kids to do themselves (or maybe with a bit of assistance from a grown-up). Thick Texas toast is flavored with sweet strawberries and just a hint of citrus, and topped with a powdered sugar-sour cream frosting that'll knock everyone's socks off. Happy Mother's Day to all the mothers out there and happy eating to the whole family.
Place bread directly on oven rack and toast until golden brown, 3-5 minutes. While bread toasts, zest lemon, halve, and juice. Place butter in a microwave-safe bowl and microwave until melted, 30-45 seconds. Alternatively, melt butter in a small pan over medium heat.
Make the Milk-Egg Mixture
Combine milk, liquid egg, ¼ cup water, melted butter, malt powder, 2 tsp. lemon juice, 1 tsp. lemon zest, and a pinch of salt in a large mixing bowl.
Assemble the French Toast Casserole
Place four bread slices in prepared casserole dish. If bread won't fit, tear toast into 1" pieces. Press down into a single layer. Pour half the milk-egg mixture over toast. Top with strawberries and their juices. Place remaining bread slices on top of strawberries. Pour remaining milk-egg mixture over top. Press on top layer to ensure liquid is absorbed.
Bake the French Toast Casserole
Place casserole in oven and bake until golden brown, 10-15 minutes. While french toast casserole bakes, make icing.
Make the Icing
Combine sour cream and half the powdered sugar (reserve remaining for garnish) in a small mixing bowl.
Plate the Dish
Cool French toast casserole 5 minutes. Spread on icing and garnish with remaining powdered sugar. Serve directly from casserole dish.