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Irresistible Peanut Butter Mug Cookie Ready in 15 Minutes Recipe

5 Stars 4 Stars 3 Stars 2 Stars 1 Star 3.9 from 51 reviews
  • Author: Claire
  • Prep Time: 5 minutes
  • Cook Time: 1.5 minutes
  • Total Time: 15 minutes
  • Yield: 1 serving
  • Category: Dessert
  • Method: Microwaving
  • Cuisine: American
  • Diet: Vegetarian

Description

This irresistible Peanut Butter Mug Cookie is a quick and convenient single-serving dessert perfect for satisfying your sweet tooth in just 15 minutes. Made with simple pantry ingredients and cooked in the microwave, it’s a deliciously soft and chewy cookie ready in a flash.


Ingredients

Scale

Base Ingredients

  • 1 tablespoon Butter (softened)
  • 1 tablespoon Creamy Peanut Butter
  • 2 tablespoons Sugar (brown sugar recommended for deeper flavor)
  • 1 large Egg Yolk (or flax egg for vegan option)

Dry Ingredients

  • 3 tablespoons All-Purpose Flour (gluten-free flour can be used at a 1:1 ratio)

Additional Flavorings

  • 1 tablespoon Milk (2%) (any plant-based milk for dairy-free version)
  • 1/4 teaspoon Vanilla Extract (almond extract as an alternative)

Toppings (Optional)

  • 1 tablespoon Chopped Unsalted Peanuts (can substitute with chocolate chips or omit)


Instructions

  1. Prepare the Mug: Spray a 12-ounce mug with cooking spray to prevent the cookie from sticking during cooking.
  2. Melt Butter: Place the softened butter in the mug and microwave on high for about 10 seconds until melted.
  3. Combine Wet Ingredients: Stir the creamy peanut butter and sugar into the melted butter until fully combined and smooth.
  4. Add Egg Yolk: Mix in the egg yolk thoroughly to incorporate it evenly into the batter.
  5. Incorporate Flour: Gradually stir in the all-purpose flour until the mixture is just combined, ensuring not to overmix.
  6. Mix in Milk and Vanilla: Add the milk and vanilla extract, stirring well to blend all ingredients into a smooth batter.
  7. Add Toppings: Sprinkle chopped unsalted peanuts on top of the batter if desired for added texture and flavor.
  8. Microwave to Cook: Microwave the mug on high power for about 1 to 1.5 minutes until the cookie is set but still soft in the center.
  9. Serve: Let the cookie cool briefly, then serve immediately for the best taste and texture.

Notes

  • For a vegan version, substitute the egg yolk with a flax egg and use plant-based milk.
  • Use gluten-free flour at a 1:1 ratio to make the cookie gluten-free.
  • Adjust the microwave time based on your appliance’s wattage to avoid overcooking.
  • Top with chocolate chips instead of peanuts for a different flavor.
  • This recipe is a perfect single-serving dessert to curb cravings quickly without making a whole batch.