Directions
Preheat your oven to 375°F (190°C). Lightly grease a 9×13-inch baking dish or a similar casserole pan.
In a large skillet over medium heat, cook the Italian sausage, breaking it up with a spoon, until fully browned and no longer pink. Drain off any excess grease if needed.
Pour the jar of Alfredo sauce into the skillet with the cooked sausage and stir to combine, letting it warm through for a minute or two so the flavors start to mingle.
Add the refrigerated cheese tortellini to the sausage and sauce mixture, stirring gently to coat all the pasta. The tortellini will finish cooking in the oven, so there’s no need to boil it first.
Transfer the mixture to the prepared baking dish, spreading it out evenly so the tortellini is nestled in the creamy sauce.
Cover the dish tightly with foil and bake for 20–25 minutes, until the tortellini is tender and the sauce is bubbling around the edges.
Remove the foil and bake for an additional 5–10 minutes to let the top lightly brown and the sauce thicken slightly.
Let the casserole rest for about 5 minutes before serving, so it can settle and is easier to scoop. Serve warm, straight from the dish.
Variations & Tips
If you grew up in a house where nothing went to waste, this bake is a perfect canvas for using what you have on hand. You can swap the Italian sausage for regular breakfast sausage or even smoked sausage coins if that’s what’s in the freezer. For a little color and sweetness, stir in a handful of frozen peas or a cup of thawed mixed vegetables before baking—they’ll cook right along with the tortellini.
If you like a bit more zip, use spicy Italian sausage and sprinkle red pepper flakes over the top before it goes in the oven.
To stretch the dish further, add an extra handful of tortellini and a splash of milk or cream to the sauce so everything stays nice and saucy. And for those who can’t imagine a bake without a crusty top, you can scatter a small handful of shredded cheese or buttered breadcrumbs over the casserole during the last few minutes of baking, just like our mothers did when they wanted to dress up an ordinary weeknight supper.
