Brown meat with chopped onion in an oven safe pan. When it's cooked through drain grease.
Add in pasta along with 2 cups of water (enough water to cover pasta). Bring to a boil and then lower it to medium high. Let it simmer for about 15 minutes.
Pour in cans of tomato paste, tomato sauce, and chopped tomatoes along with Oregano and Basil. Stir. Make sure pasta is cooked and not hard to gummy.
If pasta is cooked, spread cheese over the top of pasta and place in oven for about 15 minutes.
When cheese is bubbly, remove from oven and allow to sit for 5 minutes or so.
Recipe by A Camera & A Cookbook at https://acameraandacookbook.com/one-pot-pasta-bake/