How to make Marshmallow Fondant! Pretty easy to make, but it can get a little messy. It's best to make this in advance so it's ready to use for decorating. Microwave marshmallows, water, and flavoring in 30 second intervals until completely melted. In this video I used: 10oz mini marshmallows 2 Tbsp water 1 tsp clear vanilla extract 4 cups powdered sugar #cakedecorating #wetheculture #fondant | The Sweet Impact