My aunt makes this Christmas casserole every year and it never disappoints!

48 ounces frozen cauliflower
2 cups shredded cheddar cheese
2 cups sour cream
1 cup stuffing mix
3/4 cup chopped nuts of choice (i.e. walnuts)
1/4 cup cubed butter
3 teaspoon chicken bouillon cubes
1.5 teaspoon ground mustard

Instructions: