Put strawberries in a medium saucepan and turn heat on to medium.
Heat berries stirring often, allowing berries to reduce down to about half its original size. Keep berries to a simmer while stirring.
Set aside and let cool to room temperature.
In a large mixing bowl, whip butter with a hand mixer until fluffy.
Add ½ cup of powdered sugar and continue to whip.
Add ½ of the berries and juice and incorporate with hand mixer.
Add another ½ cup of powdered sugar and whip.
Continue to add powdered sugar until desired consistency is achieved.
Add vanilla and whip.
If frosting becomes too thick, add a tsp. of milk to thin out and whip with a hand mixer.
Recipe by Sweet Is The Spice at https://sweetisthespice.com/recipes/desserts-sweets/cake/strawberry-and-chocolate-filled-classic-chocolate-cupcakes-with-strawberry-frosting/