→ Streusel Topping
01 -
6 tablespoons melted unsalted butter
02 -
1¼ cups plain flour
03 -
¼ cup packed brown sugar
04 -
3 tablespoons white sugar
05 -
1¼ teaspoons ground cinnamon
06 -
½ teaspoon powdered ginger
07 -
Pinch of salt
08 -
⅓ cup chocolate chips (semi-sweet)
09 -
⅓ cup roughly chopped walnuts (optional)
→ Cake Base
10 -
2½ cups plain flour
11 -
2 teaspoons baking powder
12 -
½ teaspoon baking soda
13 -
½ teaspoon salt
14 -
1¼ cups white sugar
15 -
¼ cup packed brown sugar
16 -
¾ cup softened unsalted butter
17 -
3 room-temperature large eggs
18 -
2 teaspoons vanilla
19 -
1 teaspoon fresh lemon juice
20 -
1¼ cups sour cream
21 -
1 cup semi-sweet chocolate chips
22 -
½ cup chopped walnuts (optional)