Honestly, I don't recommend it. Once the sandwiches are assembled, they are best right away! However, if you want to get ahead a little bit, you cook the veggie and egg scramble, fry up the sausage, and store them separately in the fridge or freezer. They will last for up to 5 days. Then, when you're ready to enjoy, simply assemble the sandwiches and toast wrapped in foil in a preheated oven, air fryer, or toaster oven. Keep in mind, they will take a little bit longer to cook through since the scramble and sausage will be cold.