Instructions: Preheat oven to 350 degrees. Lightly grease 8-by-8 inch baking pan with cooking spray.

Combine melted butter, cocoa and oil in small bowl.

In a separate mixing bowl, whisk eggs with salt until frothy. Gradually add sugar and vanilla, whisking vigorously until mixture is pale yellow.

Stir butter mixture into egg mixture. Fold in orange zest and flour until just combined. Pour into greased baking dish. Bake for 25 minutes or until toothpick inserted in center comes out clean. Cool.

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