Preheat the oven to 350 because you will need it later.
First I cooked the mushrooms in butter.
I added garlic to the beef.
After I set the mushrooms and onions aside I cooked the squash and zucchini in coconut oil, but I used the same pan to save on dishes.
Then I covered with mash potatoes. I added some sliced chunk cheese to it. I don't shred it because I tend to use more cheese that way. Put in the oven and cook for about 10 minutes just long enough to melt the cheese.