01 -
Prepare penne pasta in boiling salted water according to package guidance; add broccoli florets during the final two minutes of cooking. Drain and reserve.
02 -
In a large skillet set over medium heat, melt unsalted butter. Add sliced turkey sausage and sauté until evenly browned, approximately five minutes.
03 -
Incorporate diced onion and minced garlic into the skillet. Cook, stirring, until onion turns translucent and soft, about three minutes.
04 -
Whisk cornstarch with whole milk until smooth, then pour mixture into the skillet. Simmer, stirring, until the sauce thickens—about three to five minutes.
05 -
Reduce heat to low. Stir in shredded mild cheddar cheese until fully melted and the sauce is uniform.
06 -
Add drained pasta and broccoli to the skillet. Toss gently to coat with sauce. Adjust seasoning with salt and freshly ground black pepper before serving.