Cheeseburger Shepherd's Pie
Cheddar mashed potatoes give this ground beef and vegetable casserole cheeseburger-like flavor. Mash with a potato masher or beat with an electric mixer on low speed. Gradually add sour cream, milk and salt, mashing or beating to make potato mixture light and fluffy. Stir in 1/2 cup of the cheese. Drain off any fat. Stir in tomato paste, water, corn, pickles, mustard, and oregano. Bring to boiling; reduce heat. Simmer, uncovered, for 5 minutes to blend flavors....