6 pcs chicken breast(breast halves; skinless, boneless, cut into cubes)
4 pcs garlic(cloves, minced, divided)
1 tbsp italian seasoning
454g fettuccine pasta(package)
1 pc onion(diced)
227g mushrooms(package, sliced)
1/3 cup all-purpose flour
1 tbsp salt
3/4 tsp white pepper(ground)
3 cup milk
1 cup half-and-half
227g colby-monterey jack cheese(shredded)
3/4 cup parmesan cheese(grated)
3 pcs tomato(roma (plum), diced)
1/2 cup sour cream
Instructions
Main
Gather all ingredients.
Melt 2 tablespoons butter in a large skillet over medium heat; add chicken, half the garlic, and Italian seasoning and cook until chicken is no longer pink and registers 165°F (74°C). Remove and set aside.
Bring a large pot of lightly salted water to a rolling boil; cook fettuccine 8 to 10 minutes until tender yet firm to the bite, then drain.
Melt remaining 4 tablespoons butter in the skillet; add onion, mushrooms, and remaining garlic and sauté until onion is transparent, about 5 minutes.
Stir in flour, salt, and white pepper and cook 2 minutes. Slowly add milk and half-and-half, stirring until smooth and creamy; stir in both cheeses until melted.
Stir the cooked chicken mixture, diced tomatoes, and sour cream into the sauce.
Serve the sauce over the cooked fettuccine.
Tips
Cut chicken into uniform cubes so it cooks evenly and finishes at the same time.
Whisk in milk and half-and-half gradually over low heat to prevent lumps in the sauce.
Serve immediately over hot fettuccine and garnish with extra freshly grated Parmesan.