Chocolate and Cheese Tunnel Cake
Ingredients
1 cake mix, two-layer chocolate with pudding (I don't see why you couldn't use any flavor cake you'd like-I went with the chocolate this time but may try something else the next time around!)
1/3 c butter
16 oz cream cheese, softened
1/2 c sugar
2 eggs
2 tsp butter, melted
2 oz semi-sweet chocolate
2 tsp corn syrup
Directions
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1
Preheat oven to 350 degrees. Prepare cake mix according to package directions, substituting butter for oil; reserve 1 cup of batter. 
2
Pour remaining batter into a 12 cup greased and floured fluted tube pan. 
3
Combine cream cheese and sugar, mixing well at medium speed on an electric mixer until well blended; blend in eggs, one at a time. 
4
Pour over batter in the pan; spoon reserved batter over cream cheese mixture and bake 1 hour or until toothpick inserted in center comes out clean. Cool 30 minutes; remove to a wire rack. 
5
Combine melted butter, chocolate and corn syrup in a small saucepan. Cook over low heat until chocolate is melted. 
6
Pour over cooled cake.