How to Make It
Whisk together eggs, milk, powdered sugar, and cinnamon in a wide, shallow dish.
Heat 1 tablespoon of the oil in a large nonstick skillet over medium-high. Place 4 bun halves in egg mixture; soak 30 seconds. Add soaked buns to skillet; cook until lightly browned, 1 to 2 minutes per side. Transfer buns to a plate. Repeat process twice with remaining 2 tablespoons oil and 8 bun halves. Serve with maple syrup.