1poundboneless, skinless chicken breast(cut into bite-sized pieces)
2tablespoonsolive oil(divided)
1 1/2teaspoonsCajun seasoning
1red bell pepper(sliced)
1green bell pepper(sliced)
1/2red onion(sliced)
3clovesgarlic(minced)
2 to 3jalapeño peppers(sliced)(remove seeds for less heat)
4tablespoonsbutter
1/4cupall-purpose flour
2cupsmilk or half-and-half
1cupgrated Parmesan cheese
1/2teaspoonsalt
1/4teaspoonblack pepper
1/4cupchopped fresh parsley
Instructions
Cook penne pasta in salted boiling water until al dente. Drain and set aside.
Season chicken pieces with Cajun seasoning. Heat 1 tablespoon olive oil in a large skillet over medium-high heat. Add chicken and cook until browned and fully cooked, about 5 to 7 minutes. Transfer to a plate.
Add remaining olive oil to the skillet. Sauté sliced bell peppers, red onion, garlic, and jalapeños until tender, about 5 minutes. Remove vegetables and set aside.
Melt butter in the skillet over medium heat. Whisk in flour and cook for 1 to 2 minutes to create a roux.
Slowly whisk in milk or half-and-half, stirring until smooth. Bring to a simmer and thicken for 2 to 3 minutes. Stir in Parmesan cheese, salt, and black pepper until melted and creamy.
Add cooked penne, chicken, and sautéed vegetables back into the skillet. Toss to coat everything evenly in the sauce.
Serve hot, garnished with fresh chopped parsley.
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Notes
Store leftovers in an airtight container in the refrigerator for up to 3 days. Reheat gently on the stove, adding a splash of milk or water if needed.