cinnamon streusel offee cake

Ingredients For cinnamon streusel offee cake

• TOPPING
• 1 c

  light brown sugar
• 1 c

  all purpose flour
• 2 tsp

  cinnamon
• 1/4 tsp

  salt
• 1 stick

  butter, unsalted cold, cut up
• CAKE
• 2 1/4 c

  all purpose flour
• 1 tsp

  baking soda
• 1/4 tsp

  salt
• 1 stick

  butter, unsalted - softened
• 1 c

  sugar
• 2

  eggs
• 1 tsp

  vanilla extract
• 1 c

  buttermilk ( or 2 tbsp white vinegar and 3/4 cup plus 2 tbsp milk)