2 Cups All-Purpose Flour

1 tsp. Baking Powder

1/2 tsp. Baking Soda

1/2 tsp. Salt

1/3 Cup Butter (room temperature)

1 Cup Sugar

1 Large Egg

1 Tbsp. Lemon Zest

1/2 Cup Fresh Lemon Juice

1/2 Cup Buttermilk

Streusel:

1/3 Cup Sugar

1/2 Cup All-purpose flour

1 Tbsp lemon zest

Pinch Salt

1 Tbsp. Fresh Lemon Juice

3 Tbsp. Butter (melted)