Baked Eggs Lorraine

Wash 1 pound leeks and slice white and light green parts thin. Cook 2 slices bacon cut into ½-inch pieces in medium saucepan over medium heat until crisp, about 10 minutes. Transfer bacon to paper towel–lined plate. Add leeks and cook until softened, about 10 minutes. Transfer leeks to plate with bacon. Proceed with recipe, omitting shallot and reducing butter to 1 tablespoon. Substitute bacon and leek mixture for spinach and ½ cup shredded Gruyère cheese for Parmesan.