Sourdough Cinnamon Pecan Coffee Cake Recipe

--------SourdoughStarter----------.
Mix ingredients in plastic or glass container.
Cover loosely.
Leave at room temperature.
for 3-5 days, stirring twice daily.
Bubbles should form on the surface, and it should smell sour.
At this point, refrigerate.
Mixture may separate, so stir before using.
---------Topping-----------.
Combine all ingredients and set aside.
---------Cake----------.
Preheat oven to 325 degrees.
Grease a 9x13" pan or an angel food cake pan.
Cream butter and sugar.
Mix in eggs, sourdough starter, milk, flour, soda, baking powder, salt, and vanilla.
Mix until light, about 3 minutes.
Pour half of the batter into pan& spread evenly.
Sprinkle with half of the topping.
Pour remaining batter in pan, and sprinkle with remaining topping.
Bake for 30 minutes, or until toothpick inserted comes out clean.
For angel food cake pan, let cool for 10 minutes, then remove.