One of my favorite basic dinners when I don't feel like cooking is: Tacos
I also like to make Sloppy Joe's. - one of my adaptations is Sloppy Joe Fold-overs.
I make a bread dough but store bought pizza crust works too. Roll about 1/8" thick (1/4" max) and cut out 6" circles, put about 1/4 cup or so of Sloppy Joe mix a little off center and a slice of cheese on top. Fold over into a 1/2 circle and seal the edge, place on a greased cookie sheet, use a knife to make a couple steam vents on top. Bake in a 350 degree oven until brown.