Preheat your oven to 375°F (190°C) and line a baking sheet with parchment paper.

Flatten the bread slices using a rolling pin to about ¼ inch thick.

In a shallow dish, whisk together eggs, milk, vanilla extract, ground cinnamon, and sugar until frothy.

Melt the butter in a skillet over medium heat until bubbling.

Dip each flattened bread slice into the egg mixture, coating both sides and letting excess drip off.

Roll up each coated bread slice with cinnamon-sugar filling, placing seam-side down.

Cook the rolls in the skillet for 2-3 minutes on each side until golden brown.

Transfer cooked rolls to the baking sheet, seam-side down.

Bake in the oven for 10-12 minutes until crispy outside.

While baking, whisk powdered sugar and milk for glaze until smooth.

Drizzle the glaze over warm rolls before serving.