Fudge from Mama

Ingredients:
2 cups sugar
1/2 stick butter
9 marshmellows, cut up
3/4 cup can milk
1 tsp vanilla
5 oz chocolate chips

Directions:
Boil sugar, butter, marshmellows, and milk for four minutes. Add vanilla and chocolate chips. Remove from heat. Stir until melted. Pour in greased pan.