Can you barbeque?
Pick up some steaks at the grocery store, season with salt and pepper, grill. Pick up pre-made and packaged garlic bread, read directions on the back, bake in oven. Grab a package of pre-made salad and some dressing. That wouldn't take you more than a half hour to prepare, cook, and have on the table.
Spaghetti is easy too...grab a package of spaghetti noodles, some Ragu/Prego, and a package of ground beef. Fire up the burners, chop up meat and cook til brown, pour Ragu sauce into a sauce pan and heat up, and cook the noodles in boiling water. This takes about 30-45 minutes.
Like chicken? Pick up some chicken breasts at the store, and marinate them in teriyaki sauce, take tinfoil, fold it, throw it on the grill, throw the chicken on the grill and cook for 20 minutes or so...check the chicken by cutting it in half to make sure it's cooked through. Take a package of rice-a-roni and follow the directions, voila. That takes a half hour. Or if you like, just get steamed rice and cook it up and have teriyaki chicken over rice.