Heat a large skillet over medium-high heat for 3 minutes.
Add sausage; cook and stir for 3 to 4 minutes or until lightly browned.
Combine soup and milk in a 13x9-inch baking dish. Stir in uncooked pasta, sausage, 1/2 cup French-fried onions, 1/2 cup cheese and peas. Cover baking dish tightly with foil.
Bake for 45 minutes.
Remove foil and top with remaining 1 cup French-fried onions and 1/2 cup cheese.