T.F.
I make my manicotti and stuffed shells from scratch and freeze individually.
When daughter come in and wants something fast, she will do a quick minute in microwave then add sauce and finish out with sauce and cheese. She is notorious for coming in late and making this herself with my ready prepared marinara that I keep on hand .
If I prepare a dinner from frozen like that, I do a little pre-thaw then bake slowly until all is hot and bubbly.