Make meatloaf in a muffin pan- it cooks in 15 minutes! (Thank you Rachel Ray). Then 'frost' them with mashed potatoes. I'd like to "skinny" up this recipe but I LOVE the idea of portion control in the muffin tin!
Lasagna Roll Ups with Step-by Step Pictures is another super easy dinner idea with endless possibilities for variation. assembly is really quick and easy. Lasagna Roll Ups with spinach and cheese but you could also do mushrooms, pesto, or any meat.