Roll-Ups - cooking recipe

Ingredients

12 fluted lasagna noodles
2 Tbsp. butter
3/4 c. chopped onion
2 pkg. frozen chopped spinach, thawed and drained *
1 1/2 c. (6 oz.) shredded Mozzarella
1/2 c. sour cream
1 egg, slightly beaten
1/4 c. (1/2 stick) butter
1 1/2 tsp. instant chicken bouillon
1/8 tsp. pepper
1 c. light cream or half and half
1 c. milk
1/2 c. grated Parmesan
1/4 c. all-purpose flour

Preparation

*Can use 2 packages of frozen, chopped broccoli instead of spinach.