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Let’s talk about one of the easiest, most satisfying chocolate desserts you can make: chocolate cake mix sandwich cookies. These are soft, chewy, super chocolatey, and filled with a creamy frosting that takes them to the next level. I love this recipe because it’s incredibly simple, just a box of cake mix and a few pantry staples, and the results are so good. If you’re craving something sweet but don’t want a complicated baking project, this is the recipe to reach for.

Cake mix cookies are a total go-to for me when I want to bake something quick without sacrificing flavor or texture. These chocolate cake mix sandwich cookies remind me of those nostalgic snack cakes from childhood, but better and homemade. You get that rich, fudgy flavor from the chocolate cake mix, and when you sandwich two of those soft cookies together with a swirl of frosting? Perfection. They’re great for birthdays, holiday cookie trays, or just because it’s Tuesday and you need a cookie.

Whether you're baking with kids or just want something quick and chocolatey, these easy cake mix cookies are always a hit.

What Kind of Cake Mix Should You Use?

You’ll want a standard 15.25 oz box of chocolate cake mix for this recipe. Devil’s food, triple chocolate, German chocolate, whatever variety you like best will work here. I usually go with devil’s food because it has that rich, deep cocoa flavor that makes these cookies taste a little extra chocolatey.

If you need a gluten-free version, you can use a gluten-free chocolate cake mix. Just make sure it’s the same size (15.25 oz) so the ratios stay the same. You can also try this recipe with a homemade chocolate dry cake mix, but boxed mix is really the easiest way to go.

Close up of chocolate cake mix sandwich cookies

Ingredients and Why They Matter

Here’s what you’ll need for these chocolate cake mix sandwich cookies:

1 box chocolate cake mix (15.25 oz): The shortcut that gives these cookies their fudgy flavor and soft texture.
2 large eggs: These hold the dough together and give the cookies a nice chew.
⅓ cup vegetable oil: Keeps the cookies soft and moist. You can sub with melted butter for more flavor if you want.
1 teaspoon vanilla extract: For additional flavor.
Granulated sugar: For rolling the cookies in.
Your favorite frosting: This is the filling that turns the cookies into sandwiches. You can use store-bought frosting, homemade buttercream, or even something fun like marshmallow fluff or peanut butter frosting.

Optional:

Add-ins like mini chocolate chips, crushed Oreos, or espresso powder can deepen the flavor or add texture.

How to Make Chocolate Cake Mix Sandwich Cookies

Preheat the oven to 350°F and line a baking sheet with parchment paper.
Make the cookie dough: In a large bowl, mix together the chocolate cake mix, eggs, and oil until a thick dough forms.
Scoop the dough into 1-tablespoon-sized balls, Roll them in the granulated sugar and place them 2 inches apart on your baking sheet.
Bake for 8 to 10 minutes. You want the edges to be set but the centers to look soft. They’ll firm up as they cool.
Cool completely on a wire rack.
Add the filling: Once cool, spread or pipe frosting onto the flat side of one cookie and top with another to make your sandwich.

That’s it! Super simple, super chocolatey, and always a crowd-pleaser.

Close up of a chocolate sandwich cookies

FAQs

Can I use a different flavor of cake mix?
For this recipe, I recommend sticking with chocolate if you want that rich, fudgy taste. But the basic method works with any flavor, so feel free to try it with vanilla, red velvet, or even funfetti if you're feeling adventurous.

Can I make these ahead of time?
Yes! You can bake the cookies a day or two ahead and store them in an airtight container. Once you fill them, they’re best eaten within 2-3 days, especially if you're using a perishable frosting.

What kind of frosting works best?
It depends on what you like. Classic vanilla buttercream is always good with chocolate. You could also use chocolate frosting for a double chocolate situation, peanut butter frosting for a sweet-salty combo, or even cream cheese frosting if you want something a little tangy.

How do I store cake mix sandwich cookies?
Store them in an airtight container at room temp for 2-3 days. If your filling needs to be refrigerated (like cream cheese), keep them in the fridge.

Can I freeze these cookies?
Yes! You can freeze the unfrosted cookies or the assembled sandwich cookies. Just place them in a single layer until frozen, then transfer to a freezer-safe bag or container.

How can I change up the recipe?
There are so many fun ways to play around with this:

Stir mini chocolate chips into the dough
Mix a little espresso powder into the batter for mocha vibes
Add a dash of cinnamon or cayenne for a Mexican chocolate twist
Roll the frosted edges in sprinkles or mini chocolate chips
Use different flavored frostings for variety

Do I need to chill the dough?
Nope! The dough is thick enough to bake right away, which is one of the best things about easy cake mix cookies.

These easy chocolate cake mix sandwich cookies are proof that you don’t need a bunch of fancy ingredients or tons of time to make something amazing. Keep a box of chocolate cake mix in your pantry, and you're always just a few steps away from warm, soft, chocolatey cookie sandwiches that everyone will love. Let me know if you try them—I’d love to hear your favorite filling combos!