I typically do a simple chicken parmesan and/or shrimp scampi. Add rolls and a salad, you're done. Shrimp scampi is essentially shrimp in garlic butter--very fast and easy, tastes great. For chicken parm, I use the parmesan crusted chicken tenders from Aldi's (green bag, next to the famous "red bag" chicken). I cook it per directions, then take out of the oven, add a spoonful of (jarred) sauce, then top with shredded mozzarella. 5 more minutes in the oven to melt the cheese, and you're there.
The only reason I do two entrees is so both the pescatarian and the meat-lovers can eat.
Even easier would be a Stouffer's lasagna or two (again, I have different eaters). They aren't as good as the authentic lasagna I slave over, but they're still pretty good--especially for the work you put (heat oven, put in, set timer, make salad).