1 box chocolate cake mix
1 cup (about 4 1/2-ounces) hazelnuts, toasted and skinned
2/3 cup sugar
1/3 cup water
Two 8-ounce containers mascarpone cheese, room temperature
1 cup cream
3/4 cup powdered sugar
1 teaspoon vanilla extract
1/4 cup bittersweet chocolate chips
1 tablespoon sugar
1 teaspoon orange zest