Blueberry Dump Cake

Blueberry Dump Cake

Gluten free blueberry dump cake is what you bake when you want to eat a cake, but don’t feel like, well, baking. Truly as easy as just “dumping” all the ingredients in and popping it in the oven!

A piece of blueberry dump cake on a white plate with whip cream

I put “dump” cakes in the same category as slow cookers: I know how popular they are, but I just couldn’t wrap my mind around them.

There are whole books written about them both, maybe even love songs for all I know. And when we’re talking about a harmless subject like how to make a ridiculously easy cake (with an unfortunate name), millions of people can’t be wrong.

I am happy to report that this gluten free blueberry dump cake is indeed super easy, and makes a really nice cake that tastes like a gluten free blueberry buckle with a shortbread base. I’m honestly not sure it could be any easier, in fact—even when you make-your-own gluten free vanilla cake mix.

Gluten Free Blueberry Dump Cake—Step by Step

They’re called “dump” cakes because, well, you just dump all of the ingredients in a pan and bake them. No mixing.

Even so, I find that the best method—by a mile—is to grate chilled butter into the cake mix. Then gently toss everything all together in the pan before pouring buttermilk over the top and baking it.

An overhead view of blueberry dump cake in a white dish

I used frozen blueberries since it’s the middle of the winter as I write this and frozen blueberries are where it’s at. But if you make this gluten free blueberry dump cake during blueberry season, you know what to do.

I made this cake quite a few times before settling on the proper proportion of ingredients and method, and the most important piece of advice I can give you is … don’t overbake it. The bottom burns quite easily. Other than that, it really is as easy, and as delicious, as it seems!

Ingredients and substitutions

Dairy-free: In place of the butter in this recipe, try using butter-flavored Spectrum nonhydrogenated vegetable shortening (or virgin coconut oil—I think they even have butter-flavored varieties of that, too). In place of buttermilk, use unsweetened almond milk + 1 1/2 teaspoons white wine vinegar.

You’ll also need to replace the nonfat dry milk in the homemade vanilla cake mix. Try using finely ground blanched almond flour, or powdered coconut milk in its place. And the whipped cream is a no-go, or it could be replaced with whipped coconut cream.

Egg-free: It’s already egg-free. :)

Watch this <1 minute video of blueberry dump cake

Just push play ▶️ and watch how easy it is!

Like this recipe?

Prep time: Cook time: Yield: 1 cake


3 cups (about 600 g) fresh or frozen blueberries

16 ounces gluten free vanilla cake mix

9 tablespoons (126 g) unsalted butter, chilled

1/2 cup (4 fluid ounces) buttermilk (or milk), chilled

Whipped cream, for serving


  • Preheat your oven to 325°F. Grease a 9-inch x 12-inch (or 9-inch square) baking dish, scatter the blueberries in an even layer in the bottom, and set the dish aside.

  • Place the cake mix in a large bowl. Using a standard grater, grate the chilled butter into the cake mix and, using your clean hands, toss to coat the butter in the cake mix. Break up the lumps that form in the grated butter until the mixture is uniform and looks like very coarse sand. Scatter the butter and cake mix mixture on top of the blueberries, and stir gently to mix. Pour the chilled buttermilk evenly over the top.

  • Place the baking dish in the center of the preheated oven and bake until the cake is puffed and lightly golden brown on top (about 35 minutes for the 9-inch x 12-inch pan, 40+ minutes for the 9-inch square pan). Do not overbake or the bottom will burn. Remove from the oven and allow to cool in the pan for 10 minutes before serving with a dollop of whipped cream.



Comments are closed.

  • Michele
    February 2, 2015 at 4:39 PM

    I made this cake this past Saturday. I didn’t get to eat any as I messed up and thought I grabbed a gluten free vanilla cake mix at the store. Turns out it was not. I had guests coming over and I am the only one who is GF so I made it anyway. Everyone said they love it and they ate all of it. I even made cool whip from scratch for it (my first time doing that…it was fun!). I am wondering if you think it would taste good with GF yellow cake mix instead of vanilla.

  • Tracy McGraw Harvey
    February 1, 2015 at 5:02 PM

    To reduce the “burning on the bottom” problem that is so common with GF baking, you might try placing a cookie sheet on the rack one level down from the rack your baking item is on. I have had very good luck with this trick.

    • February 2, 2015 at 8:19 AM

      Tracy, I’m glad you found something that works for you, but for the benefit of others I’d like to be clear that there is no “burning on the bottom” problem that is particular to gluten free baking, if you’re using the right recipe. Baked goods tend to burn on the bottom if there isn’t enough moisture, or (of course) if they’re simply over-baked. Dump cakes have a natural tendency to burn on the bottom as they are, essentially, unmixed shortbread, and not a proper cake batter with the ideal moisture balance.

  • Elena, Age 11
    January 29, 2015 at 4:55 PM

    hi Nicole, i have a question. today i made your snickerdoodles from the mix in gfoass quick & easy. they are delicous but super duper soft. i used an equal amount of shortening in place of butter and baked them ten minutes. you have any idea why they would do this?

    • January 29, 2015 at 5:53 PM

      Hi, Elena, they’re a soft cookie but yes, replacing butter with shortening will make for a less crispy cookie. The moisture in butter helps cookies spread and makes them crisp.

  • Rebecca Rudolph Thompson
    January 29, 2015 at 12:07 AM

    I’ve had some GF Dump Cake fails! I am glad to try this recipe using the fresh berries that we now get at Farmer’s Market every week in Southern California!

    • January 30, 2015 at 8:27 AM

      I’m so jealous of your Southern California weather—and berries, Rebecca!

  • Butmom
    January 28, 2015 at 2:23 PM

    Have you tried this with chilled coconut oil

    • January 29, 2015 at 5:52 PM

      I haven’t tested this recipe with any substitutions, no.

  • marmiejean
    January 28, 2015 at 10:50 AM

    Can I use a pastry blender to combine softened butter and cake mix?

    • January 28, 2015 at 11:54 AM

      You will get a much better result with all chilled ingredients, Marmiejean. But feel free to experiment, as always!

  • Mare Masterson
    January 28, 2015 at 10:04 AM

    Oh yeah!

  • Lucy
    January 28, 2015 at 10:00 AM

    Yum! I haven’t tried a dump cake before, looks to easy to be true :)

  • Jennifer S.
    January 28, 2015 at 10:00 AM

    This looks freakin’ awesome and I love me some blueberry cake. AND since it has fruit – that screams breakfast food to me. My kids complain that we eat the same things over and over for breakfast. but then when I mix it up (like bars or bcookies) they turn their noses up. They will NOT do that to this beautiful cake!!!

    • January 28, 2015 at 11:54 AM

      LOL I like your logic, Jennifer!

  • Diane Decker
    January 28, 2015 at 8:53 AM

    The link for the vanilla cake mix lists the ingredients for the chocolate cake mix. Do we just delete the cocoa powder for a vanilla cake mix? Eliminating 3/4 cup of dry ingredients seems like it would unbalance the dry/wet ingredient ration.

    • Jennifer S.
      January 28, 2015 at 9:58 AM

      No – I’m pretty sure the vanilla one is different. Nicole will see this and update the link.

      • January 28, 2015 at 11:53 AM

        There’s nothing to update. It’s there, as Mare said. You just have to scroll down everyone!

    • Mare Masterson
      January 28, 2015 at 10:03 AM

      Actually, the link is for both chocolate and vanilla.

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