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4.4 from 21 votes

Valentine Peanut Butter Blondies with M&M's

Soft and chewy with rich peanut butter flavor and studded with M&M's!! EASY, one bowl, no mixer recipe that everyone loves!!

Prep Time
5 mins
Cook Time
5 mins
Cooling Time
1 hr
Total Time
1 hr 31 mins
Servings: 9
Calories: 400 kcal
Course: Baked Goods
Cuisine: American

Ingredients

  • ½ cup unsalted butter 1 stick, melted
  • ½ cup peanut butter
  • 1 large egg
  • 1 cup light brown sugar packed
  • 1 tablespoon vanilla extract
  • 1 cup all-purpose flour
  • ¾ cup M&M's divided

Instructions

    Cup of Yum
  1. Preheat oven to 350F. Line an 8-by-8-inch baking pan with aluminum foil, spray with cooking spray; set aside.
  2. To a large, microwave-safe bowl add the butter and heat on high power to melt, about 1 minute.
  3. Wait momentarily before adding the egg so you don’t scramble it. Add the peanut butter, egg, brown sugar, vanilla, and whisk until smooth.
  4. Add the flour and stir until just combined, don’t overmix.
  5. Add 1/2 cup M&Ms and stir gently to combine.
  6. Turn batter out into prepared pan, smoothing the top lightly with a spatula.
  7. Add the remaining 1/4 cup M&M’s to the top of the batter for visual appeal. Press them down lightly so they adhere.
  8. Bake for about 22 to 26 minutes, or until done. A toothpick inserted in the center should come out clean, or with a few moist crumbs, but no batter.
  9. Allow blondies to cool in pan for at least 1 hour before slicing and serving.

Notes

  • Peanut butter: I use Jif, Skippy or similar; natural PB can separate and/or be too oily.
  • M&M's: I used plain milk chocolate but you can use peanut, dark, etc.
  • Storage: Blondies are best fresh but will keep for up to 1 week in an airtight container at room temp or up to 4 months in the freezer.
  • Adapted from Peanut Butter Blossom Cookie Bars.

Nutrition Information

Serving 1 Calories 400kcal (20%) Carbohydrates 47g (16%) Protein 6g (12%) Fat 22g (34%) Saturated Fat 10g (50%) Polyunsaturated Fat 9g Cholesterol 50mg (17%) Sodium 94mg (4%) Fiber 2g (8%) Sugar 32g (64%)

Nutrition Facts

Serving: 9Serving

Amount Per Serving

Calories 400

% Daily Value*

Serving 1
Calories 400kcal 20%
Carbohydrates 47g 16%
Protein 6g 12%
Fat 22g 34%
Saturated Fat 10g 50%
Polyunsaturated Fat 9g 53%
Cholesterol 50mg 17%
Sodium 94mg 4%
Fiber 2g 8%
Sugar 32g 64%

* Percent Daily Values are based on a 2,000 calorie diet.