Step 1

Cook pasta al dente according to package directions. Reserve 1/2 cup pasta water before draining pasta.

Step 2

Melt butter in olive oil over medium-low heat in a large skillet. Sprinkle in flour and cook while stirring for 2 minutes (it will be thick). Add garlic and cook an additional 30 seconds.

Step 3

Turn heat to low then slowly whisk in chicken broth, followed by heavy cream, tomatoes with juice, chicken bouillon, and all seasonings. Increase heat to medium-high and bring the sauce to a simmer while stirring constantly. Continue to simmer until thickened, stirring occasionally for 5-7 minutes.

Step 4

Reduce heat to low and stir in cheddar cheese until melted, followed by Parmesan cheese until melted.

Step 5

Stir in chicken and heat through. Stir in pasta until well coated, adding additional reserved pasta water a little at a time if needed to reach desired consistency. Taste and season with additional salt, pepper and/or red pepper flakes to taste.

Step 6

Garnish with freshly grated Parmesan Cheese and parsley if desired.