Preheat the oven to 350*. Lightly spray a 9x13 baking dish and set it aside.
Using a 4-5 quart heavy bottomed stock pot, brown the ground beef and diced onion on medium-high heat. Drain any excess grease, and return the browned ground beef and onions to the stock pot.
Add the 2 cans of manwich sauce, the cooked bowtie noodles and the shredded velveeta. Stir the ingredients until well combined.
Pour the Manwich casserole into the prepared 9x13 baking dish.
Evenly sprinkle the 8 oz pkg shredded colby-jack on top of the casserole.
Bake for 25 minutes.
To Store: Store any leftovers in an airtight container in the fridge for up to 3-4 days.
To Freeze: Sloppy joe casserole makes for a great freezer meal, and can be stored for up to 3 months.
To Reheat: If reheating from the freezer it’s best to let the pasta thaw a bit before placing it in the microwave. If reheating from the fridge, simply pop the casserole in the microwave until it’s heated through.