I use tart apples in this recipe because I like the combination of tart and sweet. Try different apple varieties. Also, you can use your favorite dark chocolate instead of chocolate chips. Chop into chunks.
Chocolate Chip Apple Bundt Cake
1 cup unsalted butter, softened
1 1/2 cups white sugar
1/2 cup water
1 Tbsp vanilla extract
2 1/2 cups all-purpose flour
2 Tbsp unsweetened cocoa powder
1 tsp baking soda
1 tsp ground cinnamon
1 tsp ground nutmeg
2 cups apples - peeled, cored and diced
1 cup semisweet chocolate chips (or chocolate chunks)
Preheat oven to 325 degrees F.
Grease and flour one 9 or 10 inch Bundt Pan.
In large bowl, cream butter with sugar. Beat in eggs. Add water and vanilla.
Stir flour, cocoa, baking soda, ground cinnamon, and ground nutmeg together. Beat this mixture into creamed mixture.
Fold in chopped apples and semisweet chocolate chips (or chocolate chocolate chunks).
Pour batter into prepared pan.
Bake at 325 degrees F for 1 hour and 15 minutes or until cake tests done when toothpick is inserted near center. Do not overbake. Start checking at one hour.
Transfer to a rack to cool.