Creamy Marshmallow Fondue

1 c sugar, divided
1/3 c water
20 regular marshmallows
3 egg whites
3 T water
2 T light corn syrup
1/4 t cream of tartar
1 t clear vanilla extract

In a heavy lg saucepan, combine 2/3 c sugar & 1/3 c water. Stirring frequently, bring to a boil over high heat. Remove from heat. Add marshmallows; stir until melted. Cover & set aside.
in top of a double boiler combine remaining 1/3 c sugar, egg whites, 3 T water, corn syrup, & add cream; stir until mixture is smooth. Stir in vanilla.
Serve warm or transfer to microwavable safe container. Store in airtight container in fridge.

3 c