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Healthy Peanut Butter Cup Protein Muffins - A Satisfying, High-Protein Treat

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Prep Time 10 minutes
Cook Time 18 minutes
Total Time 28 minutes
Servings: 12 servings
Ingredients Method

Ingredients
  

  • 1 cup oat flour (blend rolled oats in a blender until fine) or whole wheat pastry flour
  • 1/2 cup vanilla or chocolate whey or plant-based protein powder (one that bakes well)
  • 1/2 teaspoon baking soda
  • 1 teaspoon baking powder
  • 1/4 teaspoon fine sea salt
  • 2 large eggs, room temperature
  • 3/4 cup plain Greek yogurt (2% or 0%)
  • 1/2 cup natural creamy peanut butter (well-stirred)
  • 1/3–1/2 cup maple syrup or honey (adjust to taste)
  • 1 teaspoon pure vanilla extract
  • 1/3 cup unsweetened milk (dairy or almond/oat milk)
  • 1/3–1/2 cup dark chocolate chips or chopped dark chocolate (60–70%)
  • Optional: 1–2 tablespoons mini chocolate chips for sprinkling on top
  • Optional swirl: 2 tablespoons peanut butter for topping

Method
 

  1. Prep the pan: Preheat the oven to 350°F (175°C). Line a 12-cup muffin tin with paper liners or lightly grease with oil spray.
  2. Mix dry ingredients: In a large bowl, whisk oat flour, protein powder, baking powder, baking soda, and salt until combined.
  3. Mix wet ingredients: In a separate bowl, whisk eggs, Greek yogurt, peanut butter, maple syrup, vanilla, and milk until smooth. If your peanut butter is very thick, warm it slightly so it blends easily.
  4. Combine: Pour the wet mixture into the dry ingredients. Stir gently with a spatula until just combined. Do not overmix; the batter should be thick but scoopable.
  5. Add chocolate: Fold in most of the chocolate chips, reserving a tablespoon or two for the tops.
  6. Fill the cups: Divide the batter evenly among the muffin cups (about 3/4 full). Add a small dollop of peanut butter on each and swirl with a toothpick, if using. Sprinkle with remaining chocolate chips.
  7. Bake: Bake for 16–20 minutes, or until the tops are set and a toothpick inserted in the center comes out with a few moist crumbs. Avoid overbaking to keep them tender.
  8. Cool: Let muffins rest in the pan for 5 minutes, then transfer to a wire rack to cool completely. They firm up as they cool.
  9. Enjoy: Serve slightly warm for the best peanut butter cup experience as the chocolate melts.