I like to cook up meat in big batches. Freeze some and keep some in the fridge. Then I prepare some vegetables and or sweet potatoes in the manner of my choice, chop up the meat and put it on top. I'll make a big enough pile of this to have leftovers for another meal. So there are basically two levels of having stuff ready to go.
One kind of meat that was really good made in a large batch was a large hunk of fresh tuna. I marinated it in garlic/ginger/soy sauce and cooked it whole in the oven. It came out really moist cooked as a very large piece.
Female, 5'3", 50, Max squat: 202.5lbs. Max deadlift: 225 x 3.