Begin by slicing each cinnamon roll into thick pieces, about 1-inch thick. Set aside.

In a large mixing bowl, whisk together the eggs, milk, vanilla extract, ground cinnamon, and sugar until well combined.

Preheat a large skillet or griddle over medium heat and add a little butter or cooking spray to coat the surface.

Dip each slice of cinnamon roll into the egg mixture, allowing it to soak for a few seconds on each side. Let any excess mixture drip off.

Place the soaked cinnamon roll slices onto the hot skillet. Cook for about 3-4 minutes on each side, or until golden brown and cooked through.

Remove from the skillet and keep warm while you cook the remaining slices.

Serve warm, drizzled with maple syrup and a dusting of powdered sugar if desired.