This easy One Pot Cheeseburger Casserole is the ultimate comfort food! Best of all, it comes together in one pot, on the stove top, in 30 minutes or less.
In a Dutch oven or stockpot over medium high heat, add ground beef and onion and cook until beef has browned, about 3-5 minutes, breaking up any clumps with a wooden spoon. Drain well if desired.
Stir in tomatoes and juice, broth or water, pasta, tomato sauce, ketchup, and mustard. Bring to boil. Reduce heat, cover, and simmer until pasta is cooked through, about 13-16 minutes.
Remove from heat and top with cheese. Cover until cheese has melted, about 2 minutes. Garnish with tomatoes and pickles, if desired.