If you love chocolate and peanut butter, then this Crock Pot Chocolate Peanut Butter Lava Cake is going to be your ultimate dessert!
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5 from 4 votes

Crock Pot Chocolate Peanut Butter Lava Cake

This mouth-watering, completely ah-mazing cake is a great way to treat yourself!
Prep Time10 mins
Cook Time1 hr 30 mins
Total Time1 hr 40 mins
Course: Dessert
Servings: 12 servings
Author: Aunt Lou


  • 2 c all purpose flour
  • 1 c sugar
  • 12 T baking cocoa divided
  • 4 t baking powder
  • 1 t salt
  • 1 c milk
  • 4 T oil
  • 2 t vanilla extract
  • 2 10 oz bag peanut butter chips
  • 1 1/2 c packed brown sugar
  • 3 c hot water


  • Spray crock pot with cooking spray
  • Combine flour, sugar, 4 T cocoa, baking powder and salt
  • Add milk, oil and vanilla and stir
  • Gently stir in one bag of peanut butter chips
  • Place in your crock pot and spread evenly
  • Combine brown sugar and 8 T cocoa in separate bowl
  • Stir in hot water
  • Pour mixture evenly over batter (do NOT stir)
  • Pour your second bag of peanut butter chips evenly across the top
  • Cover and cook on high for 1½ - 2 hours, until cake passes toothpick test
  • Turn off crock pot and remove lid
  • Let cake stand for 30-40 minutes
  • Serve cake and spoon chocolate lava from bottom of crock pot over cake


  • If you look at the Crock Pot Chocolate Lava Cake, you will notice that the measurements are doubled here. I am feeding an army at our "small" group, so I knew that I needed to double it. If you are not feeding an army, you can cut this recipe in half and use a 3-quart crock pot.
  • I used my Casserole Crock Pot for this. I love the 9x13 pan for crock pot cakes and casseroles. It just works perfectly. If you don't' have one, I would use a 6-quart slow cooker for this recipe.
  • I used Reese's Peanut Butter Chips in mine. I don't usually use name brand ingredients, but they were on sale and cheap. They worked great! You can try it out with your favorite peanut butter chips if you don't have/want to buy Reese's Peanut Butter Chips.
  • As with any of our recipes, calorie counts and nutritional information varies greatly depending on which products you choose to use when cooking this dish.
  • All slow cookers cook differently, so cooking times are always a basic guideline and should always be tested first in your own slow cooker and time adjusted as needed.