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Export 11 ingredients for grocery delivery
Step 1
Cream together butter, oil, and sugar. Then add eggs and vanilla.
Step 2
Add the sour milk and beat well. Sift in the flour and the zucchini. Mix until incorporated.
Step 3
Add the rest of the ingredients. Mix well.
Step 4
Pour the batter in a greased 9 x 13 pan, bake for 50 minutes. Sprinkle with chocolate chips when still hot out of the oven.
Step 5
This cake is best served warm, but it's good anytime.