1. Melt butter and mix well with sugar in a large mixing bowl.

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2. Lightly beat eggs with a fork and add to sugar and butter mixture. Stir in sour cream until well mixed.

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3. Grate orange rind and add to mixture. Squeeze in any juice you can get from remaining orange.

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4. Mix flour, baking soda and salt in a separate mixing bowl. Then add to mixture.

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5. Peel and mash bananas. Add to mixture. Add chocolate chips here if you choose to add them.

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6. Pour into muffin tins. Bake at 350F for 20-25 min.

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Yields five dozen muffins.