INGREDIENTS
1 cup
white sugar
1/2 cup
butter
2
eggs
1 1/2 tsp
vanilla extract
1 1/2 cups
all-purpose flour
1 3/4 tsp
baking powder
1/2 cup
low-fat milk
1
lemon, juice and zest
1 cup
butter, softened
1 tsp
vanilla extract
1/4 tsp
salt
4 cups
confectioners' sugar
1/2 cup
seedless blackberry jam