Preheat oven to 350°F. Prepare ... spray (Pam). Combine soup, milk, mustard, salt, pepper ... 1/2 of the onion, 1/2 of the kielbasa, ... the russet potato layer.
Separate cauliflower and broccoli into ... spoon 1/2 of soup over vegetables; sprinkle with 1/2 ... cheese. Top with onions. Bake, covered, at 350 ... more minutes until bubbly.