Combine first 5 ingredients with a whisk in a large but shallow dish. Heat 1 tbsp of butter in grill pan or large skillet over medium-high heat. Soak bread slices in egg mixture until coated. When butter has melted and pan is hot, add soaked bread slices to hot pan. When first side is a light brown, flip the slices over in the pan and cook other side. Repeat this process until all slices have been cooked. Sprinkle with powdered sugar and serve with fruit.