Chicken Tetrazzini

YUM! Someone made this for me after I had Sadie, delicious!
1/4 cups butter
1/4 cups flour
1 tsp. salt
1 tsp minced garlic
1/8 tsp pepper
2 cups milk
2 cups half and half
3 chicken bullion cubes
2/3 cups Parmesan cheese
2 cups cooked chicken, cubed
7 oz. vermicelli, cooked

In a large skillet, melt butter. Blend in flour, salt, garlic and pepper. Add milk and half half slowly while blending with a wire whisk. Add bullion cubes and cook, stirring constantly until smooth and thickened. Add 1/3 cup parmesan cheese, cooked vermicelli and chicken. Stir and pour into a shallow 2 quart casserole dish. Sprinkle with remaining parmesan cheese. Back at 375 for 25 minutes or until hot and bubbly.