Chicken Bacon Ranch Pasta Bake

INGREDIENTS

12 oz

package medium shells (penne, or other similar dry pasta)

4 1/2 oz

fresh spinach

2 tbsp

butter

2 tbsp

all-purpose flour

2 cups

milk

1 oz

packet ranch seasoning mix

2 cups

plain non-fat Greek yogurt or low-fat sour cream

1 1/2 lb

chicken (cooked and shredded)

strips bacon (cooked and crumbled)

1 1/2 cups

shredded cheddar cheese (divided)

1/4 cup

shredded Parmesan cheese (plus more for sprinkling)