Peanut Butter Oat Mug Cake

This peanut butter oat mug cake is soft, fluffy, warmly sweet, and ready in minutes for the coziest single-serve treat.

Ingredients

  • 1/2 cup rolled oats
  • 1 large egg
  • 3 tablespoons milk
  • 2 tablespoons peanut butter, plus extra for topping
  • 1 tablespoon honey
  • 1/4 teaspoon baking powder
  • 1/4 teaspoon vanilla extract
  • Pinch of salt

Instructions

  1. Add the rolled oats to a blender and blend into a coarse flour, or use them whole for a heartier texture.
  2. In a large microwave-safe mug, whisk together the egg, milk, peanut butter, honey, vanilla extract, and salt until smooth.
  3. Stir in the ground oats and baking powder until fully combined, making sure there are no dry pockets.
  4. Microwave on high for 1 1/2 to 2 minutes, until the cake is puffed and just set in the center.
  5. Let the mug cake rest for 1 minute so it finishes cooking and stays tender.
  6. Top with an extra spoonful of peanut butter and a few rolled oats, then serve warm.

Tip: For the fluffiest texture, blend the oats first and avoid overcooking—start checking at 90 seconds since microwaves vary.

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