Grease an 8×8 glass baking dish with butter or cooking spray.
In a bowl with an electric mixer combine all the batter ingredients. Mix thoroughly. Pour into the baking dish and spread evenly.
Combine topping ingredients in a food processor and pulse until crumbs form. Sprinkle on top of the batter.
Bake for 45-50 min until golden and the center feels firm to the touch. Do not underbake. If the topping starts to get too dark cover with foil for the last 10 minutes.
Store leftovers of this Cinnamon Pecan Crumb Cake in the refrigerator.