1 unbaked pastry shell (9 inches)
1 package (10 ounces) frozen chopped spinach, cooked and drained
1/4 tsp. paprika
1/2 tsp. ground mustard
1/2 tsp. salt
4 bacon strips, cooked and crumbled
1/4 cup finely chopped onion
1-1/4 cups shredded cheddar cheese, divided
2 cups milk
4 eggs