Creating High Protein Freezer Breakfast Sandwiches is straightforward when you follow these easy steps:

1. Preheat Oven: Preheat your oven to 350°F (175°C).

2. Whisk Eggs: In a large mixing bowl, whisk together the whole eggs and egg whites. Season with salt and black pepper.

3. Prepare Mixture: Stir in the cooked turkey sausage and chopped spinach. Mix thoroughly.

4. Grease the Pan: Lightly grease a muffin tin with cooking spray or oil, making sure each cavity is well-coated.

5. Fill the Muffin Tin: Pour the egg mixture evenly into the muffin tin, filling each cavity about three-quarters full.

6. Add Cheese: Sprinkle shredded cheese on top of each portion.

7. Bake: Place the muffin tin in the preheated oven. Bake for 18-20 minutes, until the egg is set and the tops are slightly golden.

8. Cool and Remove: Once baked, allow the egg muffins to cool for a few minutes. Carefully remove them from the tin.

9. Assemble the Sandwich: Cut the English muffins in half. Place an egg muffin on the bottom half, then cover it with the top half.

10. Wrap and Store: Wrap each sandwich in plastic wrap or aluminum foil and place them in a freezer bag for storage.