1tablespoonmilk + additional drops to reach the consistency you want
1tablespoonheavy cream
2cups(227g)powdered sugar
½teaspoonvanilla extract - optional
Instructions
Combine 4 tablespoons browned butter (lukewarm), 1 tablespoon milk + additional drops to reach the consistency you want, and 1 tablespoon heavy cream. Stir.
Add 2 cups powdered sugar and 1/2 teaspoon vanilla extract all at once and stir vigorously with a spatula until smooth. If you want a glaze, add milk a few drops at a time, and continue to stir until pourable.
Notes
Want a lighter version? Use only 2 tbsp butter and add extra milk.