In a large bowl, whisk together the egg whites, eggs, salt, and pepper until smooth.
Line a 9x13 ceramic baking dish parchment paper, then spray with olive oil cooking spray.
Take 2 slices of Canadian bacon stacked on top of one-another, and place, evenly spaced, in the baking dish. Repeat 5 more times. (See visual guide for details.)
Carefully pour the egg mixture over the Canadian bacon. Bake for 10 minutes, or until the egg mixture just starts to set.
Remove from the oven, and layer the remaining 6 slices of Canadian bacon, evenly spaced, on top of the egg mixture. Bake for an additional 8-12 minutes, or until just set. Do not over bake.
Remove from the oven and let cool completely. Remove from the pan and slice into 6-equal square pieces.
Assemble the sandwiches by placing one slice of the cooked egg on the bottom half of an English muffin. Add one slice of cheese, then add the top half of the English muffin. Wrap tightly in parchment paper, wax paper, or foil. Repeat with remaining ingredients. Add to a resealable freezer bag and freeze.
Notes
Nutrition Information: Provided as an estimate only, and will vary depending on the English muffin and cheese you use.
Prep Your Dish: I recommend lining the baking dish with parchment paper to prevent the eggs from sticking to the dish. Bonus: you’ll hardly have anything to clean up!
Avoid Rubbery Eggs: Be careful not to overcook your eggs, since they’ll cook a little more when you reheat them.
Cool Completely: Allow the egg mixture to cool completely before assembling your sandwiches. Otherwise it'll start melting the cheese, and could make your English muffins soggy.
Freezing: To freeze, wrap each sandwich individually in wax paper, parchment paper, or tinfoil and place them in a freezer safe zip-top bag.