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Say that title 5 times fast! I just couldn’t decide what to leave out. Peanut butter? Caramel? Hot fudge? Slow Cooker? Crock Pot?

Whatever, this Slow Cooker Caramel Peanut Butter Hot Fudge Cake has the longest title in history, but it’s one of my new favorite desserts!

cake in white dish with ice cream


See that? That oozy caramel? It’s a Rolo.

{I know, right? I put a Rolo inside a peanut butter cake? I’m a genius.}

Now that we’re really into fall, I love using my slow cooker for dinner. (Well, at least I will be, once it stops being freaking 90 degrees. here. I mean come on Mother Nature. Give us a break please!)

I love making soups and roasts and chicken in my crockpot, but my new favorite thing to make is dessert. Obviously!

A few weeks ago I made a Slow Cooker Apple Dump Cake that rocked my world. And once I made that I started getting so many other ideas. Chocolate cake, chocolate lava cake, pie…and so many more. This is my first installment in my #crockpotallthethings winter dessert series: a Caramel Peanut Butter Hot Fudge Cake.

#notreallyaseries #butmaybe #lotsofideas

This Crockpot Caramel Peanut Butter Hot Fudge Cake is warm and gooey and awesome with ice cream!

This recipe could not be easier. I actually whipped it up one morning before school and when I got home from the gym my morning snack was ready. {Kidding. Um, sort of?}

You make this with a bowl and a spoon, no mixer needed. The peanut butter batter comes together fast with some easy stirring and it gets spread in the bottom of your slow cooker. Then you press some Rolos in the top, because Rolos are good.

Then comes the hot fudge part: cocoa and sugar are mixed with boiling water and poured slowly over the cake. While it cooks the chocolate sauce becomes thick, like hot fudge.

My cake took just about 2 hours to cook on high power. Remember though – all slow cookers are different. Mine has settings for low power (12 or 10 hours) and high power (4 or 6 hours). I put mine on high for 6 hours and after 2 it was done. If you’ve never made a cake in the crockpot before, be sure and start checking it after about an hour. It might be done in an hour and a half, or it could take up to 3 hours.

Once it’s done you let it cool a little bit, then scoop big bowls with ice cream. Because you can’t have hot fudge cake without ice cream!

Seriously, where has crockpot cake been all my life??

Crockpot Caramel Peanut Butter Hot Fudge Cake

What do you love to make in your slow cooker?

cake in white dish with ice cream

Slow Cooker Caramel Peanut Butter Hot Fudge Cake

5 from 8 votes
This peanut butter hot fudge cake is filled with Rolos and is baked in the slow cooker! There's nothing better than a bowl of this topped with ice cream for a warm and gooey dessert.
Prep Time 20 minutes
Cook Time 2 hours
Yield 8 servings


  • 1 cup all purpose flour
  • 1 cup granulated sugar divided
  • 1 teaspoon baking powder
  • 1 cup milk
  • 1/3 cup vegetable oil
  • 1/2 teaspoon vanilla
  • 3/4 cup peanut butter
  • 15-20 Rolos or similar caramel candy unwrapped
  • 3 tablespoons unsweetened cocoa powder
  • 1 cup boiling water
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  • Stir the flour, 1/2 cup sugar, and baking powder in a large bowl. Add milk, oil, and vanilla and stir until smooth. Stir in the peanut butter.
  • Spray a 6 or 7-quart slow cooker with cooking spray. Spread the batter in the bottom of the crockpot. Press Rolos evenly across the top of the batter.
  • Whisk 1/2 cup remaining sugar and cocoa powder in a medium bowl. Slowly whisk in the boiling water. Carefully and slowly pour the chocolate water over the top of the cake. Do not stir.
  • Cover and cook on High for about 2 hours, or until a toothpick comes out clean. Cool slightly before serving. Serve with ice cream or whipped cream.
  • Note: all slow cookers cook differently. My crockpot has a “High 6 hour” setting, which is what I used. Be sure to check on your cake after 1 1/2 hours and it may take up to 3 hours, depending on how your machine cooks.
Nutritional information not guaranteed to be accurate

Click here to see more PEANUT BUTTER recipes!

Crockpot Apple Dump Cake

Caramel Stuffed Peanut Butter Cookie Bars

Peanut Butter Coffee Cake

Sweets from friends:
Slow Cooker Pumpkin Pie Cake
by Mom on Timeout
Low Carb Slow Cooker Chocolate Cake by All Day I Dream About Food
Chili’s Molten Lava Cake by Something Swanky

Last Updated on May 13, 2020

Dorothy Kern

Welcome to Crazy for Crust, where I share recipes that are sometimes crazy, often with a crust, and always served with a slice of life.

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  1. Crockpots for dessert recipes look great. I’d love to try the chocolate Rollo cake but I don’t have a crockpot. Could I bake it in microwave or is an alternative the oven? Thank you!

  2. Made this many times and will make it many more to come. Peanut butter, caramel and chocolate and it goes perfect with vanilla ice cream!! I randomly have cravings for this dessert and it always satisfies <3 <3 Thank you for sharing!!!

  3. Has anyone tried to double this? I believe that question went unanswered. We will have 12 people and am wondering if doubling will work in a large 7 quart crockpot or if I should have someone bring an extra crockpot. Thanks and Happy Holidays!

  4. What would happen if I didn’t use Rolos and just poured a caramel dessert topping over the batter? Would I still need the “chocolate water” ??