
This stunning Peach Cake with Brown Sugar Frosting is loaded with fresh peach flavor and crowned with a rich, caramel-like brown sugar frosting that will have everyone asking for seconds.

Some cakes are pretty. Some cakes are good. And then there is this Peach Cake with Brown Sugar Frosting, which is both, and makes the whole kitchen smell like a bakery in the best possible way.
This is a soft, buttery sheet cake packed with real chunks of fresh peach, finished with a pourable brown sugar frosting that sets into something deeply caramel-like and completely irresistible. It is the kind of dessert that disappears before you can even cut a second slice, the kind that earns you recipe requests from people who claimed they were "just stopping by."
Whether you have been searching for a peach cake recipe with icing, dreaming about a brown sugar peach cake, or stumbled across this in a frantic attempt to use up a basket of ripe summer peaches, you have landed in exactly the right place.
A lot of peach cake recipes end up tasting vaguely of peaches at best. This one is different for a few reasons:
This is not a fussy cake. It bakes in a single 9x13 pan, the frosting comes together in one saucepan, and you do not need to level layers or set up a piping bag. It is honest, generous, and exactly what a brown sugar peach cake should be.
Getting the most out of this recipe comes down to a couple of key tools and quality ingredients. A reliable saucepan with even heat distribution makes all the difference when you are cooking the brown sugar frosting, and fresh, ripe peaches are non-negotiable for the best flavor.
This is where the recipe lives or dies, honestly. The variety of peach matters less than the ripeness.
Chef's Tip: To peel peaches quickly, score an X at the bottom of each peach, drop them into boiling water for 30 seconds, then transfer to an ice bath. The skins slip right off with almost no effort.
Let us talk about this frosting, because it deserves its own section.
This is a peach icing unlike any standard buttercream. You start by melting butter and brown sugar together in a saucepan until it bubbles and deepens in color. Then you add heavy cream, let it cook briefly, and beat in powdered sugar once it has cooled slightly. The result is a peach cake with brown sugar glaze situation, but thicker and more spreadable.
What you get is something closer to peach cake with caramel frosting in flavor: warm, butterscotch-like, with a slight crunch where it meets the top of the cake as it sets. It is extraordinary.
A few things to keep in mind:
This recipe is wonderful as written, but it also plays well with others:
Ready to bake? Here is the full recipe with every detail you need:

This stunning Peach Cake with Brown Sugar Frosting is loaded with fresh peach flavor and crowned with a rich, caramel-like brown sugar frosting that will have everyone asking for seconds.
Preheat your oven to 350 degrees F (175 degrees C). Grease a 9x13-inch baking pan with butter or nonstick spray and lightly dust with flour.
In a medium bowl, whisk together the flour, baking powder, baking soda, salt, and cinnamon. Set aside.
In the bowl of a stand mixer fitted with the paddle attachment (or using a hand mixer), beat the softened butter, granulated sugar, and brown sugar together on medium-high speed for 3 to 4 minutes until light and fluffy.
Add the eggs one at a time, beating well after each addition. Mix in the vanilla extract.
Reduce the mixer to low speed. Add half of the flour mixture and mix until just combined. Add the sour cream and milk, mix briefly, then add the remaining flour mixture. Mix until just incorporated. Do not overmix.
Gently fold in the diced fresh peaches using a rubber spatula.
Pour the batter into the prepared pan and spread it evenly. Bake for 32 to 38 minutes, or until a toothpick inserted into the center comes out clean and the top is lightly golden.
Allow the cake to cool in the pan on a wire rack for at least 30 minutes before frosting.
To make the brown sugar frosting, melt the butter in a medium saucepan over medium heat. Add the dark brown sugar and stir constantly for 2 minutes until the mixture bubbles and deepens in color.
Carefully pour in the heavy cream (the mixture will bubble vigorously). Stir to combine and cook for 1 more minute. Remove from heat and let cool for 10 to 15 minutes.
Transfer the brown sugar mixture to a mixing bowl. Add the sifted powdered sugar, vanilla extract, and a pinch of salt. Beat with a hand mixer on medium speed until smooth and spreadable, about 2 minutes. If the frosting is too thick, add heavy cream one teaspoon at a time.
Spread the warm brown sugar frosting generously over the cooled cake. It will set as it cools. Slice and serve.
This cake is genuinely best served at room temperature, which allows the frosting to stay soft and the crumb to stay loose and tender.
For serving: A light dusting of cinnamon or a few thin fresh peach slices on top makes for a beautiful presentation. A small scoop of vanilla ice cream alongside a warm slice is never a bad idea.
For storing: Cover the pan tightly with plastic wrap or foil and keep it at room temperature for up to 2 days. Refrigerate for up to 5 days, but let slices come back to room temperature for about 20 minutes before eating.
For making ahead: Bake the cake the day before, wrap it well, and frost it the morning you plan to serve it. The frosting holds up well at room temperature for several hours once set.
Whichever way you serve it, this peach cake with brown sugar frosting is one of those recipes that earns a permanent spot in your rotation. Simple, seasonal, deeply satisfying, and the kind of thing people remember long after the last crumb is gone.