This creamy alfredo pasta bake features bacon and peas, making it a delicious meal that the whole family will love. It is pretty simple to make and is going to be requested over and over again.
Preheat oven to 350℉. Either use a large oven proof sauté pan (at least 3.5 quarts) or grease a 9x13-inch pan.
Cut the bacon into small strips and cook until crisp in a large sauté pan. Drain most of the grease.
Add the onion, peas and garlic to the pan. Cook over medium heat until the onions are translucent.
Add in the cooked pasta, alfredo sauce, milk, and pasta water. If using jarred sauce, use the pasta water or milk to clean the jar.
Stir until the pasta is coated in sauce and the peas and bacon are distributed throughout. (If using a separate casserole dish to bake, go ahead and transfer it now.) Sprinkle the Parmesan cheese on top.
Bake for 15-20 minutes or until the cheese is melted and lightly browned. Let sit for a minute or two and then enjoy.