Peanut Blossom Bars

Peanut blossom bars
Claire Cohen
Prep: 15 mins
Cook: 25 mins
Total: 40 mins
Servings: 24 servings
Nutritional Guidelines (per serving)
299 Calories
23g Fat
19g Carbs
7g Protein
See Full Nutritional Guidelines Hide Full Nutritional Guidelines
Nutrition Facts
Servings: 24
Amount per serving
Calories 299
% Daily Value*
Total Fat 23g 29%
Saturated Fat 8g 40%
Cholesterol 24mg 8%
Sodium 256mg 11%
Total Carbohydrate 19g 7%
Dietary Fiber 3g 10%
Protein 7g
Calcium 33mg 3%
*The % Daily Value (DV) tells you how much a nutrient in a food serving contributes to a daily diet. 2,000 calories a day is used for general nutrition advice.
(Nutrition information is calculated using an ingredient database and should be considered an estimate.)

I have always loved Peanut Blossom Cookies. But the cookies are fussy to make. I had a brainstorm - why not try making them into a bar cookie?

I struggled with whether to use a 9" x 13" pan or a 11" X 15" jelly roll pan, but decided for the first round to go with the smaller pan. And it was perfect. These cookies are rich and soft and chewy and tender, with the best peanut butter and chocolate flavor combination. The chocolate frosting is perfect with these cookies; the combination of chocolate chips and peanut butter chips is simply perfect. It stays a bit soft and melds beautifully with the bars.

This is one of the best bar cookies I have ever made. They are now traditional for Christmas instead of the cookies. Try them!


  • 3/4 cup butter (softened)
  • 1/2 cup peanut butter
  • 1/2 cup sugar
  • 1/3 cup light brown sugar
  • 1 egg
  • 2 tablespoons milk
  • 1 teaspoon vanilla
  • 1 1/2 cups flour
  • 1 teaspoon baking soda
  • 1/4 teaspoon salt
  • 2 cups peanut butter chips (divided)
  • 2 cups chocolate chips (semisweet)

Steps to Make It

  1. Gather the ingredients.

  2. Preheat oven to 350°F. Spray a 13" x 9" pan with nonstick baking spray containing flour and set aside.

  3. In a large bowl, combine butter and 1/2 cup peanut butter and mix well. Add sugar and brown sugar and beat. Then stir in the egg, milk, and vanilla.

  4. Measure the flour carefully, and add to the batter along with baking soda and salt. Mix well.

  5. Spread the dough in the prepared pan. Bake for 20-30 minutes or until the bars are just set and light golden brown. The dough will rise quite a bit at first, but then it will settle back down. When the bars are evenly colored, they are done baking.

  6. When you take the bars out of the oven, immediately spread them with 1 cup of the peanut butter chips. You can use the type of chips that are swirled with chocolate if you'd like.

  7. Put the bars on a cooling rack. You want the bars to be still warm before you add the chocolate and peanut butter chip frosting.

  8. Then combine the chocolate chips and 1 cup of the remaining peanut butter chips in a small microwave-safe bowl. Microwave on high for 1 minute, remove and stir. Continue microwaving for 30 second intervals, stirring after each interval, until the mixture is smooth.  

  9. Pour this mixture over the bars and gently spread to coat. Let stand until set, then cut into bars to serve.