Apple Coffeecake With Cinnamon Brown Sugar Crumb

INGREDIENTS

2 cups

Brown Sugar

1/4 cup

All-Purpose Flour Or Whole Wheat Pastry Flour

1 1/2 tsp

Cinnamon, Ground

6 tbsp

Cold Butter, Cubed

3/4 cup

Cold Butter, Cubed

1 1/2 cups

Granulated Sugar

whole Eggs

2 tsp

Pure Vanilla Extract

1 1/2 tsp

Baking Soda

1 1/2 tsp

Baking Powder

1/4 tsp

Sea Salt

3 cups

All-Purpose Flour Or Whole Wheat Pastry Flour

1 1/2 cups

Sour Cream Or Greek Yogurt

whole Large Granny Smith Apples, Peeled, Cored and Diced ( About 3 cups)