Addictive Crack Cake – Easy Cinnamon Sugar Bundt Cake

One bite and you’ll understand exactly how this cake got its name.

There are cakes you bake for special occasions, and then there are cakes you bake because you physically cannot stop thinking about them. This is the second kind. Dense, buttery, impossibly moist, and swirled with cinnamon sugar — it’s the kind of cake that disappears from the counter before it fully cools.

Crack Cake starts with a box of yellow cake mix and a few pantry staples, but the result tastes like something from a bakery that charges way too much per slice. The sour cream keeps it ridiculously moist, the pudding mix makes the crumb dense and velvety, and that cinnamon sugar layer running through the middle gives every bite a warm, sweet hit. This crack cake recipe takes about ten minutes to throw together, and the hardest part is waiting for it to cool.

What Makes Crack Cake So Good?

The name says it all — this cake is genuinely addictive. But the reason it works so well comes down to what’s happening beneath the surface. A standard box cake mix on its own produces a fine cake. Light, fluffy, a little forgettable. This recipe takes that same mix and transforms it into something completely different by adding fat, moisture, and structure in all the right places.

The instant vanilla pudding mix is the first upgrade. It adds density and richness to the crumb without making the cake heavy. The result is that tight, velvety texture — almost pound cake-like — that holds together beautifully when sliced but still feels melt-in-your-mouth soft. The sour cream is the other key player. It adds moisture and a very subtle tang that keeps the sweetness from becoming one-dimensional. Together, the pudding and sour cream turn an ordinary cake mix into something that tastes completely homemade.

And then there’s the cinnamon sugar. It’s a simple touch — just a couple of tablespoons sprinkled on top of the batter before baking — but it creates a layer of warm, crunchy sweetness that caramelizes in the oven. When you flip the cake out of the Bundt pan, that cinnamon sugar ends up on top, giving the whole thing a golden, lightly crisp crust that cracks just slightly when you slice it. (Which is deeply satisfying, if we’re being honest.)

The beauty of this crack cake recipe is that it requires zero decorating, zero frosting, and zero fuss. It comes out of the pan looking gorgeous, it tastes incredible on its own, and it stays moist for days. That’s a rare combination for a cake this easy to make.

What Ingredients Do You Need for Crack Cake?

Here’s the full list — you probably have most of this already:

• 1 box yellow cake mix — Standard 15.25 oz box. Any brand works, but stick with yellow for the best flavor here.
• 1 package instant vanilla pudding mix — The small 3.4 oz box. Make sure it’s instant, not cook-and-serve.
• 4 eggs
• 1 cup sour cream — Full fat. This is what makes the cake so moist, so don’t substitute with light or fat-free versions.
• ¾ cup vegetable oil
• ½ cup water
• 2 tbsp cinnamon sugar — Store-bought or homemade (mix 2 tablespoons sugar with 1 teaspoon cinnamon).

That’s it.

How Do You Make Crack Cake?

Preheat your oven to 350°F and generously grease a Bundt pan. Don’t skip the greasing — this cake is dense and moist, which means it loves to stick. A good coating of nonstick spray with flour, or butter and flour the old-fashioned way, is essential. Every ridge of that Bundt pan needs to be covered.

In a large bowl, combine the yellow cake mix, instant vanilla pudding mix, eggs, sour cream, oil, and water. Mix until everything is just combined and smooth — about two minutes with an electric mixer on medium, or a solid round of stirring by hand. The batter will be thick and rich, noticeably heavier than a standard cake batter. That’s exactly what you want.

Pour the batter into the prepared Bundt pan and spread it evenly. Sprinkle the cinnamon sugar over the top of the batter. Don’t swirl it in — just let it sit on the surface. As the cake bakes, the cinnamon sugar sinks slightly and caramelizes, creating that signature layer. When the cake flips out of the pan, it becomes the top.

Bake for 50–55 minutes. The cake is done when a toothpick inserted into the center comes out clean or with just a few moist crumbs. The top should be golden and firm to the touch. Don’t overbake — pulling it out right on time is what keeps the inside soft and moist.

Let the cake cool in the pan for a full 15 minutes. This is important — if you try to flip it out too early, it will break apart. After 15 minutes, invert the Bundt pan onto a serving plate or wire rack, give it a gentle tap, and lift the pan away. The cinnamon sugar crust should be on top, golden and slightly crackled. Slice and serve it warm or at room temperature — it’s incredible either way. Enjoy.

What Variations Can I Make?

Add a glaze. This cake is perfect plain, but a simple glaze takes it over the top. Whisk together 1 cup powdered sugar with 2–3 tablespoons of milk and drizzle it over the cooled cake. It adds sweetness and a polished look without much effort.

Swap the cake mix flavor. Butter pecan cake mix instead of yellow produces a deeper, nuttier flavor that pairs beautifully with the cinnamon sugar. Spice cake mix leans into the warm flavors even further. Both are worth trying if you want a twist on the original.

Fold in extras. A cup of finely chopped pecans or walnuts folded into the batter adds crunch and makes the cake feel more like a coffee cake. Chocolate chips work surprisingly well too — the cinnamon and chocolate combination is underrated.

Use brown sugar cinnamon. Replace the cinnamon sugar with a mixture of 2 tablespoons brown sugar and 1 teaspoon cinnamon for a deeper, more caramelized topping. The brown sugar melts and creates an almost toffee-like crust that’s hard to resist.

How to Store Crack Cake

Cover the cake tightly with plastic wrap or keep it under a cake dome at room temperature. It stays moist and delicious for 3–4 days — the sour cream and oil in the batter are what keep it from drying out. If anything, many people find it tastes even better on day two once the flavors have had time to settle.

For longer storage, wrap the whole cake (or individual slices) tightly in plastic wrap and then aluminum foil, and freeze for up to 3 months. Thaw at room temperature for a couple of hours before serving. The texture holds up remarkably well after freezing, which makes this a great cake to bake ahead for gatherings or to keep on hand for unexpected guests.

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Frequently Asked Questions

Why is my crack cake dry?

The most common cause is overbaking. This cake goes from perfectly moist to dry quickly, so start checking at the 50-minute mark. The other culprit is substituting the sour cream with something lower in fat. Full-fat sour cream is essential for that dense, moist crumb — light or fat-free versions don’t hold enough moisture.

Can I make crack cake in a 9×13 pan instead of a Bundt pan?

Yes, a greased 9×13 pan works well. The bake time will be shorter — check it around 35–40 minutes since the batter is spread thinner. You’ll lose the classic Bundt shape and the cinnamon sugar topping effect, but the taste will be the same. Sprinkle the cinnamon sugar on top before baking as usual.

Can I use Greek yogurt instead of sour cream in crack cake?

Full-fat plain Greek yogurt is the closest substitute and works in a pinch. The texture will be very similar, though the flavor will be slightly tangier. Use the same amount — one full cup — and mix it in exactly the same way. Avoid flavored or low-fat yogurt, as both will change the result.

How do I keep my crack cake from sticking to the Bundt pan?

Grease every inch of the pan thoroughly — every ridge, every curve. Nonstick baking spray with flour is the easiest method. Letting the cake cool for a full 15 minutes before flipping is equally important. If it still sticks, try placing a warm, damp towel over the bottom of the inverted pan for a minute to help release it.

Does crack cake need to be refrigerated?

Not for the first 2–3 days. The high oil and sugar content keeps it stable at room temperature when covered tightly. After that, refrigerating it will extend its life another day or two, though the texture is best at room temperature. Just let refrigerated slices sit out for about 15 minutes before eating.