1Make devil’s food cake mix according to directions on box, substituting Coke for the water.
2Combine evaporated milk, sweetened condensed milk, eggs,and vanilla; mix with mixer or in a blender for 2-3 min. Set aside.
3 Spray Bundt pan with cooking spray. Pour 1/2 bottle of Cajeta into bottom of Bundt pan, then pour cake batter in on top of caramel. (You will pour the flan mixture down the side of the Bundt pan and chocolate cake mixture. Flan mixture will go down the side and below the chocolate cake.)
4 Get a pan that the Bundt pan will fit in. Fill pan with water, then set Bundt pan in water and place in oven. Cook at 400 degrees for about 1 hour. Start checking at 45 min. Use toothpick in the center of the cake to check if done. (Cake will also separate from sides of pan when done.)