Grapefruit and Lime Cake with a Citrus Glaze

INGREDIENTS

For cake:

1 3/4 cups

all-purpose flour

1 1/2 tsp

baking powder

1/4 tsp

salt

8 tbsp

(4 0z.) unsalted butter

3/4 cup

brown sugar

eggs

1/2 cup

vanilla yogurt

3 tsp

grapefruit juice

2 tsp

lime juice

1 tbsp

grapefruit zest (from about ½ grapefruit)

2 tsp

lime zest (from about 1 lime)

1 tsp

vanilla

1/3 cup

milk

For glaze:

2 tbsp

grapefruit juice, strained

1 tbsp

lime juice, strained

1 cup

confectioners sugar (powdered sugar)