Small Apple Cinnamon Cake

INGREDIENTS

x5-inch baking dish

3/4 cup

(about 1 small) diced Granny Smith apple

1 tbsp

granulated sugar

1 tsp

lemon juice

1/2 tsp

ground cinnamon

1/4 cup

salted butter (softened)

1/4 cup

brown sugar

2 tsp

all-purpose flour

1 tsp

ground cinnamon

1/2 cup

+ 2 tablespoons (75g) all-purpose flour ( measured by weight or using the spoon and sweep method)

1/2 tsp

+ 1/8 teaspoon baking powder

salt

2 tbsp

salted butter (softened)

1/4 cup

granulated sugar

large egg (room temperature)

1/2 tsp

vanilla extract

2 tbsp

sour cream

2 tbsp

milk (any percentage)

2/3 cup

powdered sugar (sifted)

1 tbsp

and 1 1/2 teaspoons milk (any percentage)

1/4 tsp

vanilla extract