INGREDIENTS
1 1/2 cups
all-purpose flour
2 tsp
baking powder
1/2 tsp
salt
1 1/4 cups
sugar
1/2 cup
vegetable oil
3
large eggs
1 tsp
pure vanilla extract
3/4 cup
sour cream
1 tsp
orange zest
1 cup
mini chocolate chips
1/2 cup
all-purpose flour
1/2 cup
light brown sugar
6 tbsp
cold butter (sliced into small pieces)
1/2 tsp
pure vanilla extract
1/2 cup
mini chocolate chips
powdered sugar (for sprinkling on cooled cake)