In a large mixing bowl and using a large, plastic spatula, mix together all the ingredients, EXCEPT the chocolate chips, stirring well to combine thoroughly.
Line a baking pan with parchment paper and pour the batter into the pan (I used a casserole dish).
Bake at 350 F. for 40 minutes, or until a toothpick pulls out clean.
Remove from oven and pour the chocolate chips over the top if using so they melt a bit from the heat.
Allow to cool completely before serving.
Notes
Please note that the nutrition data below is a ballpark figure. Exact data is not possible.