Perfect Strawberry Bundt Cake With Marshmallow Fluff

This strawberry bundt cake is soft like a cloud, pink like a summer sunset, and sweet enough to make you pause mid-bite and hum a little happy tune. It’s got that light, tender crumb that just melts in your mouth—and don’t even get me started on the fluffy marshmallow filling that hides inside each bite. If you’re looking for a dessert that’ll wow the kids and take the adults back to their own childhood sweet tooth moments, this is the one.

Ingredients

Strawberry Cake Mix is our shortcut to soft, fruity perfection—it gives the cake that nostalgic pink color and sweet berry flavor
Eggs bring richness and structure, making sure the cake holds its bounce
Water helps activate the mix and gives the batter a smooth consistency
Vegetable Oil keeps things moist and adds to that light texture
Strawberry Jello? That’s our flavor booster and color pop—this cake is not here to be shy
No-Salt Butter adds that creamy base to our marshmallow filling
Marshmallow Fluff is what makes the center ooey-gooey and kid-approved dreamy
Powdered Sugar sweetens up the filling and adds that pretty dusting finish
Vanilla balances out all the sweet with smooth warmth
Heavy Cream gives the filling that whipped, airy feel that pairs perfectly with the cake

How to Make This Snack

Start by preheating your oven to 350 degrees and giving your bundt pan a good spray with baking spray—nobody wants a stuck cake. Mix up all your cake ingredients until smooth, then pour the batter evenly into the pan. Pop it in the oven and bake for 35 to 40 minutes, until it’s golden, set, and your kitchen smells like strawberry heaven.

Let the cake cool in the pan for about 10 minutes, then flip it onto a platter and let it cool completely while you work on the magic filling. Blend together the butter, marshmallow fluff, powdered sugar, vanilla, and heavy cream until it’s silky and smooth. Put that into a piping bag, poke some holes into the cake, and fill each one with that sweet fluff. Dust the whole thing with powdered sugar and boom—you’ve got a strawberry masterpiece on your hands.

So let’s talk about why this is a kid-favorite in my house. The first time I made this, I didn’t even get to slice it before my youngest yelled, “Mom, is this the cake from Barbie’s kitchen?!” I mean—it is pink, it is fluffy, and it is filled with marshmallow cream. Once they had a bite, it was over. This became the official “just because” cake in our house. No birthdays, no holidays—just strawberry cake love on a regular Tuesday.

FAQs

Can I use fresh strawberries in this cake? This version is all about that nostalgic boxed flavor, but you can definitely fold in some chopped strawberries to the batter if you want extra fruity texture
Do I have to pipe the filling? Nope! You can drizzle it over the top or even use it as a dip on the side if piping’s not your thing
How do I make sure the cake doesn’t stick to the pan? Use a good nonstick bundt pan and spray it generously with baking spray—especially in all those curves and ridges

Fun Places to Serve This Recipe

This cake is a whole vibe at baby showers, backyard BBQs, tea parties with your kids, or just a Saturday afternoon when you need a pick-me-up. It’s also great for school events because it’s easy to slice, super cute, and gives total bake sale queen energy.

How to Store Leftovers

Store your leftovers (if you somehow have any!) in an airtight container at room temperature for up to 2 days or in the fridge for up to 4. You can also freeze slices individually for a future treat—just let them thaw at room temp when you’re ready to enjoy.

Tips for Making This Recipe with Kids

Let the kids help with the mixing—it’s simple and not too messy. They’ll also love dusting on the powdered sugar and poking the holes for the filling (basically, guaranteed giggles). This is one of those recipes that makes them feel like real little bakers.

This recipe works because it takes a nostalgic flavor profile and levels it up with texture and surprise. The strawberry cake is crazy light and soft, thanks to the oil and Jello combo. And that marshmallow filling? It turns each slice into a little surprise party. This bundt is fun, fabulous, and totally foolproof—just the way we like it.

Here are some more yummy bundt cake recipes to try!