French Toast Casserole

🍞 French Toast Casserole 🍓🥯 Ingredients 🛒 Casserole: 1 loaf (about 12 slices) of day-old French bread, sliced into 1-inch cubes 🥖 8 large eggs 🥚 2 cups milk 🥛 1/2 cup heavy cream (or additional milk) 🥛 1/2 cup granulated sugar 🍚 1 tbsp vanilla extract 🍦 1/2 tsp ground cinnamon 🍂 1/4 tsp salt 🧂 Topping: 1/2 cup all-purpose flour 🌾 1/2 cup packed brown sugar 🍂 1 tsp ground cinnamon 🍂 1/4 tsp salt 🧂 1/2 cup unsalted butter, cold and cubed 🧈 Optional Add-ins: