In a large bowl add the eggs, milk and 1 Tbsp melted butter and whisk together.
Add in the seasonings, 1 tsp salt, ½ tsp pepper, ½ tsp mustard powder and whisk until evenly distributed.
Add the ½ cup shredded cheese and mix together. If using sauteed veggies, add them as well
Grease an 8”x8” pan and pour egg mixture into it.
Bake at 350 for 20-30 minutes or until cooked through. It may puff a little—if you’re worried about overflow, just poke it with a knife and release any trapped air.
Remove eggs from oven and allow to cool.
Meanwhile, slice English muffins in half. Also slice bacon strips in half.
Assemble the sandwiches.
Cut the cooked egg into 6 rectangles.
Place one egg portion onto the English muffin half, add the bacon, and top with a sprinkle of extra cheese as desired.
Wrap individually and keep refrigerated or freeze for up to a week.
To heat from fridge, microwave on high for 45 seconds. From freezer, microwave on defrost setting for 1-2 minutes, then 45-90 seconds.