Slow Cooker S’mores Brownies Recipe

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This post does not contain any sponsored content, however I was provided with a slow cooker by Hamilton Beach to aid in recipe development.

Let the slow cooker do all the work when it comes to making these ooey, gooey s'mores brownies!

This post has needed to happen for a very long time… my very first slow cooker dessert recipe! (Well, except for this hot chocolate. But I don’t think hot chocolate really counts, do you?). It’s crazy that it’s taken me so long to do this, because I am a major slow cooker-user in my personal cooking life.
There are two very noteworthy reasons to make desserts in a slow cooker whenever possible…

Reason #1: There’s a bit more time in between prep and ready-to-serve. Which is especially helpful when you’re busy in the kitchen preparing lots of other foods at the same time! It frees up your oven and your hands to multi-task. Whether you’re entertaining dinner guests or prepping for a game-day feast, slow cooking a dessert means you don’t have to leave what you’re doing for a toothpick-test marathon.

Or is that just me?

I feel like any time I’m trying to time a baked dessert for dinner guests, it ends up being a total nuisance. On top of trying to prep the other food, I’m working like crazy at the same time to get dessert oven-ready so it can bake while we eat. And then, of course, I’m getting up and down from the table ump-teen times to check on done-ness (which also means the oven timer is going off every 5 minutes– because that’s not obnoxious at all… *eyes rolling*).

Anyway. The solution to all that madness? Just pop it in the slow cooker and forget it for a couple of hours! It’s so nice.

Reason to Slow Cook Your Desserts #2: Slow cooking involves a lot of steam cooking. And steam is excellent for creating seriously moist and dense baked goods. Another perk? In this particular case, it’s really awesome for getting great gooey marshmallows! Sometimes baking marshmallows can make them brittle and dry or even a little tough.

But letting them melt over the brownies in the slow cooker kept them perfectly melt-y and gooey. I stuck mine under the broiler for a sec just to give them that beautiful, golden brown look and a slightly crisped texture. But that’s totally optional. They would have been delicious without the browning.

Let the slow cooker do all the work when it comes to making these ooey, gooey s'mores brownies!

I think slow cookers tend to get the reputation that they are only suitable for frozen chicken breasts and other dinner-y things. And while those foods are awesome (I mean, obviously– because, um, hi creamy-delicious-chicken-dinner-that-I-stuck-in-the-slow-cooker-this-morning-and-haven’t-touched-since; I love totally you), but how cool is it that you can make desserts in there too?

Moist, dense, ooey, gooey decadent desserts like S’mores brownies?! Complete with the requisite graham cracker crust, brownie center, and melted Hershey’s milk chocolate just beneath that toasty mallow layer.

Tips for making Slow Cooker S’mores Brownies (recipe at bottom of post):

  • Line the slow cooker with parchment paper. It’s more than a mess-saver– it makes cutting and serving a breeze too!
  • DON’T cook these on the high setting unless you want burnt and dried-out brownies.
  • This should probably go without saying, but… make sure your slow cooker has been thoroughly cleaned out from the last dish you made. Even the teensiest smidge of an onion or burnt-on chicken broth could infuse your dessert with savory flavors. Don’t take the risk!


Are you hooked on slow cooker recipes? Us too! 7 bloggers have teamed up today to bring you our favorite slow cooker recipes in partnership with Hamilton Beach.


Be sure to check out these other fabulous slow-cooker recipes:


7 Show-Stopping Slow Cooker recipes


Chicken Fajita Dip – Sweet Treats and More

slow cooker chicken fajita dip

Blackberry Jalapeno Chicken Sandwiches – Cooking For Keeps 

Slow-Cooker Blackberry and Jalapeno Chicken Sandwiches 4

Slow Cooker Meatballs – Favorite Family Recipes

Sweet & Spicy Slow Cooker Appetizer Meatballs

Creamy Spinach Dip – Super Healthy Kids

game day veggie tray

Chipotle Chiken Taquitos – Creme de la Crumb


California Pizza Kitchen BBQ Chicken Dip – Oh, Sweet Basil

California Pizza Kitchen BBQ Chicken Bacon Pizza Dip in a slow cooker! BOOYAH!!

Let the slow cooker do all the work when it comes to making these ooey, gooey s'mores brownies!

Slow Cooker S’mores Brownies

Yield: approximately 15


For the Crust:

  • 3 cups graham cracker crumbs (approximately 18 graham cracker sheets)
  • 3/4 cup butter, melted
  • 1/2 cup sugar

For the Brownies:

  • 1/2 cup butter
  • 8 ounces bittersweet chocolate, chopped
  • 1 cup sugar
  • 3 large eggs
  • 1 1/4 cups all-purpose flour
  • 1/4 cup unsweetened cocoa powder
  • 3/4 teaspoon baking powder
  • 1/2 teaspoon salt
  • 1 cup semisweet chocolate chips


  • 4 Hershey Milk Chocolate bars
  • 10 ounces miniature marshmallows


  1. Prepare a slow cooker bowl by lining it with one sheet of parchment paper and lightly greasing with non-stick spray. But do not turn on yet.


  1. Mix together the graham cracker crumbs, melted butter, and sugar. Press mixture into the bottom of the lined slow cooker.


  1. In a medium saucepan over medium heat, melt the butter and bittersweet chocolate together. Remove from heat.
  2. Mix in the sugar. Mix in the eggs, one at a time, mixing in between each addition.
  3. Mix in the flour, cocoa powder, baking powder, and salt.
  4. Stir in the chocolate chips.
  5. Spread batter evenly over the graham cracker crust.
  6. Break apart the Hershey bars and place them on top of the brownie batter.

Cover and cook on low for 2 - 2 1/2 hours

  1. When brownies pass the toothpick test (check at 2 hours), top with the marshmallows and replace cover for 5-10 minutes until marshmallows are melted.
  2. If desired, place slow cooker under broiler for a minute to toast the marshmallows.

When ready to serve, lift brownies out using the parchment paper and cut into 3-inch pieces.


Cooking time may vary based on your model

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11 thoughts on “Slow Cooker S’mores Brownies Recipe”

  1. Couldn’t you use a brownie mix for this also ? That would save time. I love cooking dessert in my slow cooker. I do it each week for teachers at school. Works like a charm. Did butterscotch bread pudding last week. Don’t think I can do this with all ingredients/extra cooking, but will try with brownie mix and see how it works out.Thanks bunches for idea

  2. I love a good brownie, especially with marshmallows on top. I always feel like i am juggling the kids and baking, so the fact that you can make these in the slow cooker is perfect!


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