Peanut Butter & Chocolate Lava Mug Cake

Lava Mug Cake

Sorry for not posting on Saturday everyone! I’ve been really busy lately, and not in a fun way. More in a “why is there suddenly so much stuff to clean” way. Plus, I waited until the last minute to make my Halloween costume, which meant all of my free time was spent creating a costume I had to explain to everyone I saw.

Aaaannyway, on top of all of the stuff I’ve had to do lately, I have developed quite a sweet tooth. It’s weird, because I will normally choose savory over sweet in a heartbeat. These past few weeks, though, I’ve been craving chocolate like nobody’s business. Last week, I needed chocolate chip cookies, to the point where I got home from work and immediately took the butter out of the fridge to soften.

Peanut Butter Lava Mug Cake

I don’t need a bunch of cookies all the time, though, sometimes I just want a super quick way to satisfy that craving with one serving, and mug cake is totally the answer. I’m not a huge cake fan, but lava cake always does the trick. It’s like a brownie with hot fudge poured over it. Add some peanut butter, and that sweet tooth won’t know what hit it. Here’s the recipe to make your own:

Peanut Butter & Chocolate Lava Mug Cake



  • 2 TBSP Butter, Melted
  • 2 TBSP Water
  • 1/2 tsp vanilla
  • pinch of salt
  • 2 TBSP Cocoa Powder (I love the special dark for this)
  • 4 TBSP Sugar
  • 4 TBSP All-Purpose Flour
  • 1 1/2 TBSP Peanut Butter (I’d recommend creamy for this, but crunchy was all I had)


  1. You can melt the butter right in your mug, then add your water, vanilla and salt, whisk together.
  2. Add your cocoa powder and whisk until smooth
  3. Then, add your sugar one tablespoon at a time, whisking in between until smooth.
  4. Finally, add your flour, in the same way as your sugar, and whisk well. You should have something resembling cake batter at this time.
  5. Drop your peanut butter off a spoon right in the center of the batter, and press it down a little so the sides of the drop are covered by the batter.
  6. Microwave for 50-60 seconds, right around 55 seconds was perfect for my microwave, the peanut butter melts, the sides become a nice, moist cake, and there is still a little molten chocolate.
  7. Let it sit for a couple of minutes. Your lava cake will be lava hot right out of the microwave.
  8. I also recommend keeping a glass of milk nearby. You’ll need it.