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So, this recipe out of the Home Cooking vintage recipe book calls for a 9×12 pan. I’ll admit – I just assume that my pans are 9×13. This had me running a quick Google and Amazon search to see how common the 9×12 size is. And, wow, I feel like I should look at the sticker when I purchase a pan. Some of mine may be 9×12 and some may be 9×13. They fit together so nicely – I’ve never thought about a difference in size. But now I will. Every. Time. 😂

All of that to say this – the recipe calls for a 9×12 pan. If you make it in a 9×13, then I assume the bar cookies will be flatter than if you used the smaller pan size. Use what you will – they’ll still be delicious.

Something to keep in mind when you pick up a vintage recipe book that was put together by a community group or church. The recipe may not be *well-written*. Be sure to read it several times to make sure you’re understanding the intent of the person who provided the recipe. I’ve included a picture of this recipe from the book at the bottom of this post as an example of one that wasn’t written in a format that we typically expect in today’s era.


Blondie Bar Cookies

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Prep: 10 minutes
Cook: 25 minutes
Total Time: 35 minutes
Servings: 24 bars
Simple and delicious, this treat will quickly become a favorite in your kitchen.


  • 1 9 x 12 baking dish


  • 1 ½ Cup Cake Flour*
  • ½ tsp salt
  • 1 tsp baking powder
  • ½ Cup softened butter
  • ½ tsp vanilla
  • 1 egg yolk only

Top Layer

  • 1 egg white only
  • 1 Cup Pecans or walnuts, whole or chopped
  • 1 Cup brown sugar


  • Preheat oven to 350°F
  • Prepare 9x12 baking dish
  • Sift and mix all dry ingredients (not including nuts)
  • Mix together the, butter, white sugar, vanilla, 1 egg, and 1 egg yolk until light
  • Combine dry and wet and ingredients thoroughly
  • Spread mixture into 9x12 baking dish

Top Layer

  • Beat 1 egg white. Slowly add in 1 cup brown sugar. Spread over top
  • Sprinkle nuts over top
  • Bake 20 - 25 minutes, being careful to not overbake.


The recipe called for pecans.  I added the walnut suggestion as that is how I have always had blondie bars.  You can leave them out if you have an allergy or do not like them.
*If you don't have cake flour, don't worry, you can quickly make some! 
  • For each cup of cake flour that you need:  Take one cup of all-purpose flour, and then remove 2 tablespoons.  Now, add 2 tablespoons of cornstarch. Sift the two ingredients together and use in recipe as written. 
Course: Dessert
Cuisine: American
Keyword: Baking, Bars, Cookie Bars, cookies
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vintage recipe

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