Start by preheating your oven to 350 degrees F. Spray a large baking sheet with olive oil cooking spray. Add the spinach and cook for 6-7 minutes until wilted.

In a large bowl, whisk together the whole eggs, egg whites, and cottage cheese until smooth. Season with salt and black pepper to taste.

Add the pre-cooked sausage, onion, sun-dried tomatoes and garlic to the prepared baking sheet. Mix everything together so that all the ingredients are evenly distributed. Then add egg mixture and season with more salt and pepper.

Pop it in the oven and bake for about 20-25 minutes, or until the eggs are set and cooked through. Let cool for 10 minutes, then cut into 12 equal squares.

Place a slice of white cheddar cheese on the bottom half of each English muffin. Then, add a square egg patty on top of the cheese. Top with the other half of the English muffin.

To freeze, wrap each sandwich tightly in plastic wrap or aluminum foil. Then, place them all in a large freezer bag or container. These sandwiches will keep well in the freezer for up to 2 months.

When you’re ready to eat, just grab a sandwich from the freezer, unwrap it, and reheat in the air fryer or toaster oven at 400 degrees F for 5 minutes. You can also microwave it for 1-2 minutes if you're in a pinch, however the English muffins will not be crispy.