Packed with rich chocolate and peanut butter flavors, this mug cake recipe is so easy to prepare and is ready to eat in under 5 minutes!

Craving a bite of something sweet but don’t want to make a whole cake? Try a microwave mug cake!

The great thing about these microwavable treats is that you can make them with small amounts of ingredients you probably have on hand already. Big enough for one (or two, if you’re feeling generous!), these little cakes steam up in the microwave for quicker, more convenient baking.

They’re perfect for when you’re craving a little dessert or when you just want a little late-night snack! All you need is a few ingredients, a few minutes and a big ol’ coffee mug!

Best of all, no mixers, no sifters, no bowls! This single-serve mug cake is prepped and baked right in the mug.

The Perfect Mug Cake Mug

For this recipe, you’ll need a large 10 to 12 oz. mug. Make sure it’s microwave safe, too!

For best results, we suggest using a wide mug, if you can find one. This will help the cake bake evenly and may help prevent burning or over-cooking.

Also, make sure your mug doesn’t have any metal or metallic paint on it. A simple, ceramic mug works great!

Can You Make a Mug Cake in Advance?

This peanut butter chocolate mug cake should be eaten immediately; however, you can prep the ingredients and have them ready to go whenever you get the urge to bake.

If you want to prep your mug cake (or bring it with you to the office), simply combine your dry ingredients in your mug, then package your wet ingredients separately. Once you’re ready, add the wet ingredients to the dry and microwave away!

Other Add-In Ideas

  • Not a peanut butter fan? Try using milk chocolate, white chocolate or butterscotch chips instead.
  • You can also top your mug cake with chocolate hazelnut spread rather of whipped topping.
  • For added texture and flavor, try adding coconut, nuts, cinnamon or other candies to your cake.

More Mug Cake Recipes

Rich and decadent, these Mug Brownies are great for family movie nights or weekend parties with friends. Though they’re baked in the oven, they are prepped and served in little mugs for a fun presentation.

For a tasty fall treat, try these Mug Apple Pies. Topped with seasoned apples and caramel drizzle, these mug treats are best served warm with a big scoop of vanilla ice cream.

These Mini Chip Mug Cookies are more for cookie lovers. Made using oats, brown sugar, pecan chips and cinnamon, these tasty treats can be topped with any number of fun decorations!

A cool fall morning is the perfect excuse for these Maple Drizzle Mug Cakes. Topped with cinnamon whipped cream and maple syrup, these treats are baked right in the mug you serve them in, meaning less cleanup and less mess!

Have you ever tried making a mug cake? We’d love to hear how it went! Let us know in the comments below, or post a photo of your cake on social media and tag us @wiltoncakes.

Chocolate Mug Cake with Peanut Butter Drizzle

5 from 1 vote
Course Dessert


  • ¼ cup All-Purpose Flour
  • ¼ cup Sugar
  • 1 tablespoon Cocoa Powder
  • ¼ teaspoon Baking Powder
  • teaspoon Salt
  • 3 tablespoons Water
  • 2 tablespoons Vegetable Oil
  • ½ teaspoon Vanilla Extract
  • 2 tablespoons Peanut Butter Chips, Separated
  • Whipped Cream or Frozen Whipped Topping, For Garnish (optional)


How to Make an Easy Mug Cake

  • In a 10 to 12 oz. microwave safe mug, combine the flour, sugar, cocoa powder, baking powder, salt, water, oil and vanilla.
  • Stir with a fork or a whisk until no lumps remain, then stir in 1 tablespoon peanut butter chips.
  • Microwave your cake on high for 60 to 70 seconds, or until a toothpick inserted in the center comes out clean.
  • For a quick decoration, melt the remaining peanut butter chips according to the package directions.
  • Drizzled the melted peanut butter over your cake, then top with a dollop of whipped cream or frozen whipped topping.
Tried this recipe?Take a picture and tag us @WiltonCakes on Instagram