Common Questions
Do I have to use a bundt pan?
No, but it helps. A bundt pan gives you structure, even baking, and the shape makes the hidden center extra dramatic. You can use a standard tube pan. A 9x5 loaf pan works too, but the reveal will be more of a stripe than a ring.
Will an 8-inch inner cake fit every bundt pan?
Not always. This recipe is written for a 10 to 12 cup bundt pan. If your pan is smaller (around 9 cups), bake the inner cake in a 6-inch round pan, or cut a smaller ring from the 8-inch cake (trim more off the outside and remove a larger center). You want at least 3/4 inch of space around the ring for the chocolate batter.
Why does the inner cake need to be chilled?
A chilled inner cake is firmer, so it stays put when you pour the outer batter around it. Warm or fragile cake can break and blur into the outer layer.
Can I use a boxed cake mix?
Yes. For the outer layer, choose a devil’s food or dark chocolate mix. For a standard 15.25-ounce box, add 1 teaspoon espresso powder. An extra egg can help with structure, but it varies by brand, so treat it as optional and keep an eye on bake time. The inner cake can also be boxed, just bake it in a small pan and chill it well.
How do I keep it from sticking?
Grease every ridge like you mean it, then dust with cocoa powder. Let the cake cool 10 minutes in the pan, then invert. Too soon and it can tear. Too late and it can glue itself in.
Can I swap the raspberry almond center for something else?
Absolutely. Good options: lemon poppyseed, coconut, or even peanut butter cake. Keep the inner cake on the denser side and avoid gooey fillings that can melt and migrate.
Nut-free option?
Easy fix: skip the almond extract and use vanilla extract instead. You will still get the raspberry pop and the clean reveal, just without the almond note.