Strawberry Balsamic Cupcakes

INGREDIENTS

16 tbsp

unsalted butter, at room temperature

1 cup

granulated sugar

1 cup

light brown sugar, packed

3 cups

cake flour

1 tbsp

baking powder

1/2 tsp

salt

large eggs, at room temperature

1 tbsp

vanilla extract

1 1/4 cups

buttermilk, at room temperature

3 cups

fresh strawberries (16 oz.), rinsed, hulled and coarsely chopped

1 cup

plus 6 tbsp. sugar, divided

2 tsp

balsamic vinegar

large egg whites

3 sticks

unsalted butter, at room temperature

3 cups

strawberries, diced small

3 tbsp

sugar

1 tsp

balsamic vinegar

1/4 tsp

vanilla extract

1/2 cup

balsamic vinegar

2 tbsp

light brown sugar