Eggs Benedict Casserole

6 English muffins 10 -12 ounces Canadian bacon (2 packages, or use diced ham) 8 large eggs 2 cups reduced-fat milk (or whole milk) 1 teaspoon onion powder[...]

1 tablespoon olive oil , plus more for pan 6 English muffins , split and cut into 1-inch pieces 1 leek , cut into 1/4-inch thick half moons (white and light[...]