1 ½cupswhole fresh or frozen strawberries (thawed)
1cupunsalted butter, softened
pinchsalt
3 ¾cupspowdered sugar, sifted
¼teaspoonvanilla extract
¼teaspoonlemon juice, freshly squeezed
2-3tablespoonsmilk (optional, use if frosting is too stiff)
Instructions
Puree 1 1/2 cups whole fresh or frozen strawberries (thawed) in a food processor. This should yield about 3/4 cup of strawberry puree.
Place the strawberry puree in a small saucepan and bring to a simmer over medium heat, stirring frequently. Reduce heat to medium-low and stir occasionally until puree is reduced to 1/4 cup. This should take around 15 minutes.
Remove the strawberry puree from the pot and place it in a container in the refrigerator for 30 minutes.
After the puree has cooled, beat 1 cup unsalted butter, softened until creamy and airy, about 7 minutes. Add a pinch salt, 1/4 teaspoon vanilla extract, and 1/4 teaspoon lemon juice, freshly squeezed and mix until well blended.
With mixer on low, alternate adding 3 3/4 cups powdered sugar, sifted and the cooled strawberry puree, beating until just combined after each addition. Turn the mixer to medium and beat until fluffy, about one minute. If needed, add milk one tablespoon at a time.