Just a few simple ingredients and you have delicious & chocolaty Crock-Pot Hot Fudge Brownies! No need to heat up your oven for this easy recipe!

Slow Cooker Hot Fudge Brownies
Quick and tasty desserts are easy to make in the crock-pot. This recipe for Hot Fudge Brownies has 3 main ingredients. A box of brownie mix, some chocolate syrup and water. That is it!
Depending on which brownie box mix you use, you are adding in two or three more ingredients. But for me, these are all ingredients I have in my house.
First time making this recipe and it seems like the water mixed with the hot chocolate is just too much water. I was worried that the recipe was going to be a disaster. I recommend cooking it almost the entire 3 hours. First time I made this, at two hours cooked, half of the brownies were still too liquid.
Second time I made this, I let the brownie mixture cook a full 3 hours. The entire brownie cooked through and there were no watery portions.
I tested the recipe on my kids. They gave it a big thumbs up. My oldest did give some feedback and added that more is not better on the Crock-Pot Hot Fudge Brownies. She said it was very rich in taste and a smaller portion was best.
Equipment Needed For Crock-Pot Hot Fudge Brownies Recipe:
- 4.5 Quart, 5 Quart, 5.5 Quart, 6 Quart, 6.5 Quart, 7 Quart Oval Slow Cooker OR 3.5 Quart Casserole Slow Cooker
- Mixing Bowl
- Wooden Spoon
- Liquid Measuring Cup
- Non-Stick Cooking Spray

Frequently Asked Questions
There are several reasons why someone might want to bake brownies in their slow cooker versus baking them in the oven. The main reason is not wanting to heat up the oven when you are craving chocolaty brownies because it is already hot outside in the summer months. Another reason is because you may not have access to an oven but you do have access to a slow cooker.
If you are on a gluten-free diet you can easily use a gluten free brownie mix in this recipe. Some our favorite brands of GF brownie mixes are Krusteaz Gluten Free Double Chocolate Brownie Mix, King Arthur Fudge Gluten Free Brownie Mix and Namaste Foods Gluten Free Organic Dark Chocolate Brownie Mix.
You can easily add your favorite chopped nuts such as pecans or walnuts to this brownie recipe. Other fantastic mix-ins are chocolate chips (dark chocolate, white chocolate, milk chocolate, semi-sweet chocolate) or even dried fruit such as cherries. Use your imagination and have fun!

Special Diets
More Super Tasty Crock-Pot Desserts!
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This recipe for Slow Cooker Chocolate Banana Cake yields a light and fluffy chocolate cake just just a hint of banana. Only 4 ingredients and 1 hour to bake!
Crock-Pot White Chocolate Raspberry Bread Pudding
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Crock-Pot Banana Cake
This recipe for Slow Cooker Chocolate Banana Cake yields a light and fluffy chocolate cake just just a hint of banana. Only 4 ingredients and 1 hour to bake!
Crock-Pot Chocolate Bread Pudding
Serve this Slow Cooker Chocolate Bread Pudding with a scoop of vanilla ice cream or whipped cream for a great family friendly dessert!
Recipe Collections:
- Dessert Recipes
- 5 Ingredients Or Less Recipes
- 4.4 Quart Slow Cooker Recipes
- Chocolate Recipes
- Easy Crock-Pot Recipes

Crock-Pot Hot Fudge Brownies Recipe
Ingredients
- 1 Box Brownie Mix (Your Favorite Brand (I Used Betty Crocker Brand))
- 1 Cup Chocolate Syrup (Your Favorite Brand (I Used Hershey's Brand))
- 1 Cup Hot Water
Brownie Mix Ingredients (may vary depending on brand of boxed brownie mix you use)
- ½ Cup Vegetable Oil
- 2 Large Eggs
Instructions
- Spray a 4.5 quart or larger oval slow cooker OR a 3.5 quart casserole slow cooker with non-stick cooking spray.
- Fix brownie mix according to box, adding eggs, oil, water etc.
- Pour prepared brownie batter into prepared slow cooker, spreading evenly.
- In a bowl, mix together the chocolate syrup and hot water and pour mixture over batter.
- Cover and cook on HIGH for 2 - 3 hours.
- Remove lid and let stand for 30 minutes to allow the middle to set up.
- Serve with your favorite ice cream or whipped cream and enjoy!
Nutrition

This was so good. So rich that servings were small. I didn’t know how hot my slow cooker was so at the 2 hr mark I turned it to low for the next hr and watched it closely. Came out just right. Ice cream on top cut through the chocolate richness. Will make again.
So glad you enjoyed the recipe Leslie!
This recipe is great! I added about 20 minutes to my cook time in my very old Crock. I let it set for around 20-30 minutes m with the lid off, rolled the fudge around in the crock. They are best nice, and hot, but are delicious no matter what.
So glad you enjoyed this recipe, Morgen!
Do you add the eggs oil and water on top of what is called for on the brownie mix box? Just wanting to clarify. Sounds delicious.
Hey Gina! Use whatever your box of brownie mix calls for. Hope you enjoy!
Any chance you’ve doubled this recipe? I need to make a large portion for a big group and was curious if you would cook it longer with doubling it! Thanks!
We have not tested this recipe by doubling it. I’m not sure it would cook all the way through. If you try it come back and let us know how it turns out!
I’d imagine for a group that’s more than 12 people there ought to be a second crock pot available to bake a second one!
So you’re talking about a brownie mix for a 13×9 pan not an 8 inch pan? I looked thru the whole article to find out but it was nowhere! Kinda important…….
Just made these today…The chocolate syrup and water stayed really runny after 3 hours cooking and 1/2 setting up time. Going to cook another hour or so and see if that helps. We did a sneak taste…really wet, but yummy….reminds us of lava cake.