Cook Penne pasta according to package instructions minus two minutes. While water heats and pasta cooks, prepare other ingredients.
Drain pasta and transfer to baking dish. (I used four ceramic baking dishes, see photo)
Preheat oven to 350 degrees, place oven rack in center of oven.
Heat oil in a large skillet over high heat. Add onion and garlic and cook for two minutes until onion is translucent.
Add sausage and cook, breaking it up as you go, until it turns from pink to white.
Add marinara, water, basil, and oregano
Bring to simmer, reduce heat to medium and cook for five minutes. Add salt and pepper if desired.
Pour sausage mixture over penne. Top with cheese. Cover loosely with foil and bake for 20 minutes. Remove foil and bake another 5-10 minutes until cheese is bubbly and golden.
Let stand for five minutes before serving. Enjoy!