Preheat the Oven: Begin by preheating your oven to 350°F (175°C). Grease a muffin tin or line it with muffin liners.
Prepare the Bread: Cut your bread into cubes; about 1-inch pieces work best. Spread them evenly across the muffin tin to fill each cup.
Mix the Egg Mixture: In a large bowl, whisk together the eggs, milk, sugar, vanilla extract, cinnamon, and salt. This blend of ingredients is what will give your muffins that French toast flavor.
Combine: Pour the egg mixture over the bread cubes, ensuring they are well-soaked. Gently fold the mixture to coat all the bread pieces evenly.
Fill and Bake: Spoon the mixture into the prepared muffin cups, filling them about 3/4 of the way full. Bake in the preheated oven for approximately 20 minutes until they puff up and turn golden brown.
Cool and Serve: Allow the muffins to cool in the tin for a few minutes before transferring them to a wire rack. Serve with maple syrup or your favorite toppings!