Chicken Spaghetti

1/4 c butter
1/4 c flour
2/3 c chicken broth
1/2 c half and half cream
1/2 c sour cream
1 c parmesan cheese
1/4 c white grape juice
1 garlic clove, minced
1 tsp lemon juice
1/2 tsp dry mustard
3 c cooked chicken breasts, cubed
8 oz cooked spaghetti
2 tsp paprika

Melt butter in sauce pan and add the flour, stiring constantly
Add chicken broth, half and half, sour cream, parmesan cheese, grape juice, garlic, lemon juice, dry mustard and salt and pepper
Stir over medium heat until mixture starts to thicken
Add chicken and spaghetti and mix well
Pour into a baking dish and sprinkle with paprika
Bake for 30 minutes at 350