Taco salad! (brown meat, drain off most grease unless you like it greasy, add taco seasonings (I get mine from costco), about a cup or two of water, mix it good, simmer till the water is mostly gone and the meat is moist. Spoon over lettuce, add taco sides like shredded cheese, guac, whatever you like, grab fork)
Swedish meatballs! (mix raw ground beef, an egg, 1/2 teaspoon allspice and dill, salt and pepper to taste. roll into walnut sized balls. In pan fry half an onion with butter (or oil of your choice), when soft add 1 cup chicken stock and 1 cup beef stock, bring to a simmer, add beef balls. Simmer till beef is done. Mix in sour cream if you choose.) The original recipe.
Stuffed peppers (cut hole in top of peppers like you would a pumpkin. remove seeds, blanch (quick boil) in boiling water for 3 minutes. remove and set aside. brown beef, mix in whatever you want: I usually do onions and tomatoes but whatever looks good in the fridge goes in, including leftover chicken bits, kale, spinach, you get the idea. cook till the additions are heated or cooked through (I wait till onions are soft). Spoon beef mixture into peppers. Add cheese. Place in 375 degree oven and bake for 20 mins or so.) Original recipe (scroll down to Make Me Stuffed Peppers)
Meatloaf: Recipe (don't make the tomato topping, its nasty and adds extra carbs)