Remember those days in school when the lunchroom lady had something special cooked up, and you and your classmates raced to be the first to take a delicious bite? What tasty treat was a better cause for excitement than the Lunchroom Lady’s Peanut Butter Bars, a buttery, rich confection made with peanut butter and chocolate frosting? None! Now you can make the same bars at home for yourself and your family. and watch everyone race to the kitchen to be the first to have a bite!

The Lunchroom Lady’s Peanut Butter Bars

Ingredients you will need:

  • 1 1/4 stick butter or margarine
  • 1 cup peanut butter
  • Add and mix 3 minutes
  • 1/4 cup white corn syrup
  • 1/2 tsp. salt
  • 1 1/2 cup sugar
  • 3 eggs
  • Add 1 1/2 cup flour and mix until flour is incorporated
  • Bake 325 for 30 minutes in a 15 x 10″ pan
  • Do NOT over mix!

Lunchroom Lady's Peanut Butter Bars 1

Place 1 1/4 stick butter or margarine and 1 cup peanut butter into mixer. Mix on medium for 3 minutes. Add 1/4 cup white corn syrup, 1/2 tsp salt, 1 1/2 cups sugar, and 3 eggs. Mix 3 minutes.

Mixing ingredients for Lunchroom Lady's Peanut Butter Bars

Add 1 1/2 cup flour into batter, mixing as you pour.

Lunchroom Lady's Peanut Butter Bars being mixed

Place mixture in 15 x 10  inch pan. Spread. Place in 325 degree oven for 30 minutes

Spreading Lunchroom Lady's Peanut Butter Bars batter

Mix 3 tablespoons butter or margarine, 4 tablespoons peanut butter, 3 tablespoons cocoa, 2 cups powdered sugar, and 1/5 cup hot water or milk. Mix together until smooth.

Lunchroom Lady's Peanut Butter Bars frosting mixture in progress

After allowing peanut butter bars to bake and cool, spread frosting evenly across the top. Cut, serve, and enjoy!

Lunchroom Lady's Peanut Butter Bars frosting spread

To make a smaller batch, use a 9 x 13 inch pan and these simple substitutions:

When the recipe calls for X, use Y:

1/4 cup – 1 tablespoon + 1 teaspoon

1/3 cup – 1 tablespoon + 2 1/3 teaspoons

1/2 cup – 2 tablespoons + 2 teaspoons

Serve Like a Lunchroom Lady!

Rada Silver Spatula

Serve like it’s your job with the Rada Spatula! This metal spatula is perfectly sized for cooking and serving foods of all kinds, enabling you to serve like a pro!

Raise Money with Rada!

Rada Cutlery

Rada doesn’t just make superior cutlery at a great value; it also uses those products to help organizations of all kinds get funds for worthy causes! Groups that fundraise with Rada will find that not only does Rada practically sell itself, but that they make a 40% profit on their sales! Tens of thousands of schools, churches, charities, civic organizations, sports teams, and more have fulfilled their goals since 1948 by fundraising with Rada!

Click here for information on how to get started on fundraising with Rada!

Rada: Made in America

Rada Factory with American Flag

When you buy Rada, you buy an American product, as Rada’s entire line of cutlery and kitchen products are made entirely in the USA. This is evident in both the high quality, a result of American ingenuity and workmanship, and the price, a good value that ensures anyone’s kitchen can have the finest tools available. Watch this video to see the Rada Mfg. Co. factory floor and hear from our employees.

Lunchroom Lady’s Peanut Butter Bars Video Recipe



Pin the Peanut Butter Bar Collage!

A few picture from the process of making the bars!

Share this with your friends on Pinterest!


Peanut Butter Bars Video Transcript

Hi, Kristy in the Rada Kitchen, and today I have a recipe for the Lunchroom Lady’s Peanut Butter Bars. These are those peanut butter bars that you enjoyed while you were in school. Well, I actually have that recipe, and I’d like to share it with you.

Now, in your mixer you are going to mix one cup of peanut butter. This is the creamy variety,  I don’t think it really matters what kind you use. And then a stick and a fourth of butter or margarine. And now we’re going to mix this on medium for three minutes.

After three minutes you’ll get this nice, creamy butter and peanut butter mixture. And now to this we’re going to add a fourth cup of white carol syrup. A half teaspoon of salt. One and a half cups sugar. And three eggs. And again we’re going to mix it for three minutes.

After three minutes you get this nice, creamy mix. And now we’re just going to add a cup and a half of flour just until it’s blended in. We’re just going to run it on low, we don’t want to overmix it. You just want to incorporate the flour into the batter. And we’re going to pour this into a 15 x 10 inch pan. That’s a big pan, of course, because it’s made for school. At the end of this video there’s a conversion chart in case you want to cut it in half and put it in a 9 x 13. Now we’ll put this in our 15 x 10 inch pan. Spread it out to the corners.

Now she doesn’t say if you have to grease this pan, I don’t think so because there’s a lot of butter in this recipe and it shouldn’t stick to your pan. Then you’ll put this in a 325 degree oven for about 30 minutes.

So while our bars are in the oven baking, I’m going to mix up the peanut butter cocoa frosting. So you need three tablespoons of butter or margarine. Four tablespoons of peanut butter. Three tablespoons of cocoa. Two cups of powdered sugar. And a fifth cup of hot water or milk. Yes, that’s a fifth, not a typo. Or three tablespoons. We’re just going to mix this together until it’s smooth.

So I let the peanut butter bars cool and now we’ll spread on our peanut butter chocolate frosting. And then they’ll be ready to cut and serve. So thanks to the lunchroom lady, here’s a great recipe that I guarantee your family will ask for. And also, if you’re a member of a food service group, Rada Cutlery does a fundraising option for you, you can make 40% profit, just check out our website at

End Video Transcript

recipe image
Recipe Name
Lunchroom Lady's Peanut Butter Bars
Published On
Preparation Time
Cook Time
Total Time
Average Rating
51star1star1star1star1star Based on 1 Review(s)