INGREDIENTS
1/2 cup
butter softened (1 stick)
1/4 cup
fresh chives finely snipped
2 1/4 cups
all purpose flour
1/2 tsp
baking powder
1/2 tsp
baking soda
1/4 tsp
salt
3 tbsp
butter softened
1/4 cup
chopped scallions
2 cups
sharp cheddar shredded
1/2
fresh grated Parmesan cheese
1 cup
plus 1 tablespoon buttermilk
1
egg white beaten