Spinach Noodle Casserole

1/2 pound broad noodles, cooked according to package directions
2 packages frozen spinach, defrosted
1/4 pound melted butter
2 eggs, beaten lightly
1/8 teaspoon garlic powder
1 teaspoon seasoned salt
1 pint sour cream
1 teaspoon onion powder
pepper to taste

In casserole dish, place drained noodles. Add spinach. Mix together eggs and sour cream. Add remainder of ingredients and mix. Pour into noodle mixture. Bake uncovered at 350°  for 25 minutes.