Fruit Puree Frosting Tips: How to Avoid Runny Frosting
Fruit puree can give frosting fresh flavor and color, but only if you control the moisture. Reduce the puree, cool it fully, and add it little by little to a sturdy base such as buttercream.
Essential Concepts
Reduce puree. Cool fully. Add slowly. Use buttercream, freeze-dried fruit, or jam. Avoid warm or thin puree.