R.J.
The only ones of these that take longer than half an hour are the baked ones, and that's just bake time. For meat loving dad... just keep a few flavors of sausages and brats in the freezer. When he want meat-meat-meat... just defrost and throw 2 in the pot or in the oven. Ditto some fully cooked chicken burgers, and some fully cooked meatloaf slices, bacon slices, sausage crumbles... all are ready to go with no thought. Just heat up some meat for him to go with whatever else you're making.
Quiche / Frittatas
Omlettes
Baked Potatoes
Pasta (dozens and dozens of types... most basically red sauce, pesto - basil or roasted red pepper-, cream sauce... boil, bake, or stuffed.
Gnochi
Eggplant Parm
Stuffed peppers
Stuffed mushrooms
Stuffed 8ball zukes or Stuffed Eggplant
Asian Noodle salad (I like somen salad, myself)
Curries (my fav are tomato curries and coconut curries)
Burritos
Shishkabab
Gyros w/ falafel instead of lamb/beef
Risotto (get someone else to stir!)
Polenta
Cannelini beans + red onions + olive oil + salt spooned over bread
Hummus & Pita
Grilled Cheese & Tomato soup
Belgin waffles w/ strawberries
White or red Chili
Enchiladas
Tempura
Tostones and Guacamole
Pear & Bleu Cheese Tart
Soups by the gallon w/ crusty bread
Foccacia Sammies (fresh mozz, roasted red peppers, spinach, & pesto or garlic mayo comes readily to mind)
Paninis