I do't have many cake mix recipe but this one comes to mind as it's so easy and delicious and very unusual at the same time. This is a real surprise breakfast/tea time treat. The grapes retain their color and shape, lending a juicy, firm contrast to the coffee cake.

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Seedless Grape Coffee Cake

1 recipe coffee cake from your
favorite package mix
1/4 cup (soft brown) sugar
1 teaspoon cinnamon
2 cups washed seedless grapes
1/2 teaspoon nutmeg

Make coffee cake according to package directions. Pour into greased baking pan. Top with seedless grapes. Mix sugar, cinnamon and nutmeg and sprinkle over grapes. Bake according to directions.