Creating Easy Cinnamon Sugar French Toast Muffins is straightforward. Follow these steps to achieve delightful muffins:

1. Preheat the Oven: Start by preheating your oven to 350°F (175°C). Prepare a muffin tin by greasing it or placing paper liners in each cup.
2. Mix Dry Ingredients: In a large bowl, whisk together the flour, baking powder, salt, cinnamon, and sugar until well combined.
3. Combine Wet Ingredients: In another bowl, beat the eggs and then add the milk, melted butter, and vanilla extract. Mix thoroughly to combine.
4. Combine Mixtures: Pour the wet ingredients into the dry ingredients. Stir gently until just combined; avoid over-mixing to keep the muffins light and fluffy.
5. Fill Muffin Cups: Spoon the batter into the prepared muffin cups, filling each about three-quarters full to allow room for rising.
6. Sprinkle Cinnamon Sugar: Generously top each muffin cup with cinnamon sugar for a delightful crunchy finish.
7. Bake: Place the muffin tin in the preheated oven and bake for 20-25 minutes or until the muffins are golden brown and a toothpick inserted in the center comes out clean.