Fajitas are quick and easy. You slice chicken or steak into thin slices, and cook it well in a large frying pan. Once the meat is cooked, add a bag of frozen pepper stir-fry veggies (peppers and onions) - or you can use fresh. Once the veggies are starting to cook, add one packet of fajita seasoning mix and cook until the sauce is thick. Serve on flour tortillas with shredded mexican cheese, chopped tomato, shredded lettuce, and sour cream. You can also make Ortega Spanish rice as a side dish (very easy to make - just follow the instructions on the packet).
Another easy favorite of mine is fresh cheese tortellini in red sauce with meatballs. Look in the refrigerated section of your grocery store for fresh tortellini. Buy a jar of spaghetti sauce (I prefer Prego traditional) and some frozen meatballs. Heat the meatballs in the sauce, and cook the tortellini according to the directions on the package. Mix together. Serve with a salad and garlic bread.
I also like kielbasa and pierogies. This is also very easy. Put the kielbasa in a cast-iron skillet or baking dish with a little water, and cover with aluminum foil. Cook at 350 degrees for about an hour. About 20 minutes before your kielbasa is done, brown onions in a frying pan. Add pierogies (I like the mini pierogies) and cook as per package directions. This can be served with any vegetable of your choice or a salad.