Tuesday, May 21, 2024
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The Queen’s Favorite: Super Delicious Melt in Your Mouth Shortbread Toffee Cookies

It's Sweet to Share!

What’s the best thing about St. Patrick’s Day? Searching the house for all the chocolate coins that have fallen out of the leprechauns pockets, of course! The second best thing is Shortbread Toffee Cookies. 

Did you know that the buttery shortbread cookie originated in the British Isles? It was Mary, Queen of Scotts favorite cookie.

Shortbread Toffee Cookies

I concur! Shortbread is my favorite cookie out of all the cookies in the entire world! I love it crunchy, or soft; I love how smooth it is and how it dissolves under the tongue and spreads sweet flavors of buttery flavored brown butter cookies.

Shortbread is like butter on steroids — because that’s exactly what it is. It’s just butter mixed with flour and sugar. It’s perfect food.

But then again, I would also drink melted butter if that was a thing…

I will eat an entire pan of Toffee Bar Squares by myself. I cannot stop. I will not stop. These cookies are the next best thing.

Toffee Bar Squares get their toffee flavor from the brown sugar in the cookie dough that caramelize during the baking process at Fahrenheit 350°, whereas these shortbread toffee cookies get their toffee flavor from the condensed milk caramel layer!

Shortbread Toffee Cookies 

Shortbread Cookie for St. Patrick's Day

Originally Posted 2009 | Updated 2021

This St. Patrick’s Day treat is a favorite in Ireland. Shortbread Toffee Cookies with a buttery bottom layer that fuses with the top chewy toffee layer to create a simple, yet delicious treat.

Making the toffee caramel from sweetened condensed milk will have this treat on your table in under and hour.

Shortbread Toffee Cookies

Shortbread Toffee Cookies

Catherine Olson
Queen Mary's favorite cookie will surely be your favorite too!
Prep Time 15 minutes
Cook Time 25 minutes
Course Dessert
Cuisine Irish
Servings 18 cookies


  • 9×13 baking pan



  • 1/2 cup butter
  • 1/2 cup sugar
  • 2 cups flour


  • 14 oz. condensed milk
  • 1/2 cup butter
  • 1/2 cup brown sugar
  • 2 tablespoons Karo syrup
  • 1 teaspoon vanilla



  • Mix all ingredients together until smooth and press into 9×13 greased pan
  • Cook at Fahrenheit 350° for 20 minutes
  • Let cool


  • Bring all ingredients to boil over medium heat
  • Cook for 5 minutes stirring constantly
  • (When mixture pulls away from the sides of the pan, it is done. Depending on your stovetop, it may not require the full 5 minutes of cooking time.)
  • Remove from heat and stir in vanilla
  • Pour immediately over shortbread
  • Let set


  • Drizzle melted chocolate over toffee
Keyword Shortbread Toffee Cookies

Can I Use Shortening in Place of the Butter?


Make These Shortbread Toffee Cookies!

If you make these cookies, tag @Fahrenheit350sweets on Instagram so I can see it! And I’d love it if you left a review and a comment below! 

More Super Yummy St. Patrick’s Day Recipes to Bake at Fahrenheit 350°!


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