Ingredients

8 ounces rotini pasta
12 ounces broccoli florets
1 tablespoon olive oil
2 boneless, skinless thin-sliced chicken breasts
Kosher salt and freshly ground black pepper, to taste
2 tablespoons unsalted butter
2 tablespoons all-purpose flour
3/4 cup chicken broth
3/4 cup milk, or more, as needed
1/4 cup heavy cream
1/4 teaspoon garlic powder
1/4 cup freshly grated Parmesan
2 tablespoons chopped fresh parsley leaves

Method

1. In a large pot of boiling salted water, cook pasta according to package instructions. Within the last 2 minutes of cooking time, add broccoli; drain well. 
2. Heat olive oil in a large skillet over medium high heat. 
3. Season chicken breasts with salt and pepper, to taste. 
4. Add to skillet and cook, flipping once, until cooked through, about 3-4 minutes per side. Let cool before dicing into bite-size pieces. 
5. Melt butter in the skillet over medium heat. Whisk in flour until lightly browned, about 1 minute. Gradually whisk in chicken broth and milk, and cook, whisking constantly, until incorporated, about 1-2 minutes. Stir in heavy cream and garlic powder until slightly thickened, about 1-2 minutes. 
6. Stir in Parmesan until well combined, about 1 minute. If the mixture is too thick, add more milk as needed. 
7. Stir in pasta, broccoli and chicken. Gently toss to combine; season with salt and pepper, to taste. 
8. Serve immediately, garnished with parsley, if desired.