"It didn't take long for this cake from the 1970s to become the favorite birthday cake of my husband, Joe. —Patty LaNoue Stearns, Traverse City, Michigan..."
INGREDIENTS
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1 package white cake mix (regular size)
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1 package (3.4 ounces) instant pistachio pudding mix
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3 large eggs
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1 cup club soda
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3/4 cup canola oil
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1 cup chopped walnuts
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FROSTING:
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1 package (3.4 ounces) instant pistachio pudding mix
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1 cup 2% milk
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1 carton (8 ounces) frozen whipped topping, thawed