Heat a little oil in a nonstick skillet over medium heat and sauté the sausage, onions, mushrooms, and peppers for a few minutes. For an oil-free breakfast, dry-sauté the veggies covered with a lid.
Add a pinch of minced garlic and the greens for the last 2-3 minutes of cooking.
Meanwhile, cook the grits according to package directions, replacing 1/2 cup (4 oz) of water with the milk. Add the seasonings and the nutritional yeast. Keep adding water if the grits seem to firm up too much. They will continue to firm up a little when you remove them from the heat, just like oatmeal does.
Combine everything, season to taste, and enjoy this savory, delicious start to your day!