Ingredients
- 1/3 cup boiling water
- 4 Tbsp butter
- 3/4 cup sugar
- 1/2 tsp vanilla extract
- 1 cup powdered milk
Directions
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In a large bowl, combine water, butter, sugar, and vanilla.
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Gradually add powdered milk, whisking until thickened.
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Store, covered, in refrigerator for up to 1 week.