Creating the perfect Cinnamon Streusel French Toast is a breeze if you follow these simple steps:

1. Prepare the Custard: In a large bowl, whisk together the eggs, milk, vanilla extract, cinnamon, salt, and granulated sugar until well combined.

2. Make the Streusel Mixture: In another bowl, combine flour, brown sugar, and ground cinnamon. Add the cold butter cubes and mix using your fingers or a fork until it resembles coarse crumbs.

3. Soak the Bread: Preheat your skillet or griddle over medium heat. Dip each slice of bread into the egg mixture, ensuring both sides are coated well. Leave it in the mixture for about 30 seconds to absorb the custard.

4. Add Streusel: Once coated, sprinkle a thin layer of streusel topping on one side of the bread and gently press it into the custard.

5. Cook the French Toast: Place the soaked and topped bread on the preheated skillet or griddle. Cook for about 3-5 minutes on each side or until golden brown and crispy. You may need to work in batches according to the size of your cooking surface.

6. Keep Warm: If cooking in batches, keep the finished French toast warm in a low oven while preparing the remaining slices.

7. Serve: Once all the French toast is cooked, serve immediately with a dusting of powdered sugar and maple syrup if desired.