Sourdough Coffee Cake

Ingredients

• 2 1/2 c flour
• 3/4 t baking soda
• 3/4 t baking powder
• 1/2 t salt
• 1 c sourdough starter
• 3/4 c sugar
• 2/3 c oil
• 1/3 c sour cream or greek yogurt
• 3 eggs
• 2 t vanilla
• For fruit/jam variations:
• 1 C pureed bananas, jam or pumpkin
• increase flour to 3 cups, soda and baking powder to 1 teaspoon each and sugar to 1 cup
• -or-
• 1 cup chopped fruit
• Crumb topping
• 6 T melted butter
• 1 c flour
• 3 T brown sugar
• 3 T granulated sugar
• 1/4 t baking powder
• pinch salt
• 1/2 c nuts (optional)*