Pre-heat oven to 350 F (177 C).
Make 2 x the High Protein Condensed Mushroom Soup Recipe. Add an additional 1 cup of Soy Milk to to soup recipe so that it's thinner for pouring on top of the potatoes.
Make 1 1/2 x the High Protein "Bacon" Bits Recipe. Don't cook these as dry as you normally would for a salad because the cook again in the oven.
Peel and thinly slice the potatoes. I use a mandolin.
In a casserole dish, cover the bottom with a layer of the mushroom soup.
Start lining the outside walls of the casserole dish with the potatoes (stood up), then go around the inside edge of those potatoes adding more until the edges meet in the middle of the dish and all the potatoes are standing up and evenly spaced. You may need to add additional soup during this process to ensure there is some liquid between each of the potatoes.
Pour the remaining soup over top and try to get it to go into the crevices between potatoes.
Sprinkle on the shredded cheddar and Parmesan.
Add the bacon bits on top.
Cook for 45 - 50 minutes until fork-tender.