3 qts. popped popcorn
1 (10 oz.) bag marshmallows
1/4 tsp. salt
1/2 c. butter
1/2 tsp. vanilla

Place popcorn in greased 9 x 13 inch pan. Melt butter; add marshmallows. Stir until melted and well blended. Remove from heat, stir in salt and vanilla. Pour over popped corn; toss until well coated. Bake at 250 degrees for 30 minutes, stirring every 15 minutes. Spoon onto wax paper; cool. Store in tightly covered container.