Penne Pasta:

• 16 oz. penne pasta

Chicken:

• 16 oz. boneless, skinless chicken breast, cut into ½” cubes
• 1½ tsp Cajun seasoning
• 1 Tbsp unsalted butter

Vegetables:

• 1 Tbsp olive oil
• 1 red bell pepper, sliced into ¼” strips
• 1 green bell pepper, sliced into ¼” strips
• ½ large red onion, sliced into ¼” strips
• 1½ tsp minced garlic

Sauce:

• 4 Tbsp unsalted butter (divided)
• ½ cup all-purpose flour
• 2 cups low-sodium chicken stock
• ¾ cup whole or 2% milk
• 1 head roasted garlic, coarsely chopped
• ½ tsp salt
• ½ tsp black pepper
• 1 cup grated Parmesan cheese
• ¾ cup heavy cream

Garnish:

• Green onions, chopped