Marley's Menu Logo

Butterscotch Milkshake with Homemade Butterscotch Sauce

By Marley Goldin
on July 13, 2021
last updated on August 23, 2021
5 from 1 vote

This post may contain affiliate links. Please read my disclosure policy.

This Butterscotch Milkshake recipe will teach you to make your own homemade butterscotch sauce to add to your perfectly creamy milkshake.
butterscotch milkshake with whipped cream and a cherry on top

Looking for the nostalgic taste of butterscotch in a creamy, sippable delicacy? This Butterscotch Milkshake is a trip down memory lane with a creamy vanilla base and a butterscotch sauce that tastes like Grandma’s candy jar.

This butterscotch milkshake recipe will teach you how to make your own butterscotch sauce, but you can also choose to skip the hassle and buy some from the store and make this a three-ingredient wonder!

Either way, this homemade milkshake will bring you back in time to that nostalgic 50’s diner-style taste that warms the soul while simultaneously cooling you down.

milkshake on a small plate with a spoon full of butterscotch and cherries

Butterscotch Milkshake Tips and Tricks

Make Your Butterscotch First

With just 4 ingredients, butterscotch is surprisingly easy to make. Think caramel, but with brown sugar instead of white granulated sugar.

Here’s everything you’ll need:

salt, brown sugar, butter, and cream

Keep your heat source on medium-low throughout the process to avoid burning the sauce. Start by heating the sugar on its own until it liquifies.

When you heat the sugar it will get a little clumpy at first. Not to worry, about a minute or two after it clumps up, it will be liquefied and perfectly smooth.

Next, you can add the butter. When you add the butter, your liquefied sugar will bubble and sizzle. Once it settles, you can start to add your cream.

Making sure your cream is at room temperature is key! The cream should be added slowly, whisking all the while to combine it with the butter and sugar.

After adding the cream, turn the heat source off, but keep the saucepan where it is, allowing the butterscotch to bubble for about a minute. Then, remove the sauce from heat before adding salt.

The yield for this butterscotch sauce recipe is just enough for your milkshake, so if you want extra to save for later or to drizzle on top, just double all of the ingredients to yield 1/2 cup of sauce.

butterscotch dripping off of a spoon onto a milkshake

You’ll Need A Blender or Food Processor

In addition to your two ingredients, you’ll also need either a blender or a food processor, preferably a blender! I use this Ninja Blender for this milkshake and a lot of my sauces and vinaigrettes. It works like a charm!

Aside from your blender or food processor, you’ll need your homemade (or store-bought!) butterscotch and two other key ingredients.

Here’s everything you need:

vanilla ice cream, milk, and butterscotch

The Blender Must Be On While Adding the Butterscotch

The only way to successfully integrate your butterscotch into your ice-cold creamy milkshake is to add the butterscotch while you are blending.

Add your ice cream and milk to the blender, turn it on high, and then add your butterscotch while you are blending. If you add all three together and then turn the blender on, the butterscotch is likely to stick to the inner side of the blender and not combine with your milk and ice cream.

Quick note: most modern blenders are designed with a little spout on the lid so you can add things to the blender while it’s on, without things splattering all over the kitchen! Don’t try to blend your milkshake with the top off—it will cause a huge mess!

If you do not have a spout on the lid of your blender, blend milk and ice cream first, then keep adding butterscotch a little at a time, blending in between until all ingredients are combined.

Getting the Right Consistency

I’ve found that 1/3 cup milk in this shake gets me a fantastic consistency. Just thick and creamy enough, but not too much to stop me from slurping it up through a straw.

Green tip: Consider investing in reusable straws! They are easy to clean and will reduce your contribution to plastic waste that eventually ends up in landfills or makes its way into the environment and becomes microplastics. These stainless steel straws are my favorite!

That being said, if you find that your milkshake is a little too thick, you can add an extra tablespoon or two of milk to your blender. Add them one at a time, blending in between, and checking your consistency as you go.

Remember, it’s much easier to loosen it when it’s too thick than to make it thicker. If your ice cream is a little melted, start with 1/4 cup of liquid instead of 1/3 cup. Then check your milkshake and add more liquid as needed.

pouring a milkshake into a glass

Have Fun With It!

Add some garnish to give your milkshake some texture and a fun, classic diner milkshake feel!

Some options for garnish include sprinkles, nuts, whipped cream, extra butterscotch, and a cherry on top. But don’t let me stifle your creativity—add all your fixin’s!

Close up of Diner-Style Milkshake with Cherry on Top

Why You Should Make This Butterscotch Milkshake

  • It’s nostalgic. The taste of butterscotch brings me back to having Werther’s Original at my grandma’s house as a kid.
  • It’s creamy. The perfect thick, but sippable consistency.
  • It’s scratch-made. Down to the sauce!

If you’re loving this Butterscotch Milkshake and want more sippable delicacies, check out this Peanut Butter Milkshake and Coffee Milkshake.

Butterscotch Milkshake with Easy Homemade Butterscotch

5 from 1 vote
Recipe by Marley Goldin Course: DessertCuisine: American


Sauce Cook Time


Milkshake Prep Time


Total time



This Butterscotch Milkshake recipe will teach you to make your own homemade butterscotch sauce to add to your perfectly creamy milkshake.


  • Easy Homemade Butterscotch Sauce
  • 1/4 cup brown sugar

  • 1 & 1/2 tablespoon unsalted butter

  • 2 tablespoons heavy cream, room temperature

  • 1/4 teaspoon salt

  • Butterscotch Milkshake
  • 1 cup vanilla ice cream

  • 1/3 cup milk

  • 1/4 cup butterscotch


  • Easy Homemade Butterscotch Sauce
  • Add your sugar to a small saucepan over medium-low heat and stir occasionally until it liquefies—about 5 minutes.

    The sugar will clump up before it liquefies. It will usually be smooth about 1 minute after it gets clumpy.
  • Once your sugar has liquified, add butter and whisk until combined.

    When you add your butter, the mixture will bubble.
  • Slowly add your cream while whisking, until completely integrated.

    Make sure your cream is not too cold, it will cause your butterscotch sauce to seize up.
  • Once your butterscotch sauce is smooth, stop stirring and turn your heat off, but leave the pot on the burner for one more minute. It should be bubbling just a bit.
  • Remove from heat, add salt, and stir.

  • Butterscotch Milkshake
  • Add ice cream and milk to your blender and fasten on the lid.
  • Turn blender on high and add your butterscotch sauce through the spout on the lid while the blender is on. Continue to blend until smooth.
  • Pour into a glass, garnish as desired, and enjoy cold!

Pro Tips

  • Make sure you add the butterscotch while the blender is on. If you do not have a spout on the lid of your blender, blend milk and ice cream first, then keep adding butterscotch a little at a time, blending in between until all ingredients are combined.
  • You can sub store-bought butterscotch for homemade butterscotch in this recipe for less hassle!
  • If your ice cream is a little melted, you may not need all 1/3 cup of milk. Start with 1/4 cup and add more if it’s too thick.

Did you make this recipe?

Snap a pic and tag @marleysmenu on Instagram

This recipe taste as good as it looks?

Pin it and follow us @marleysmenublog on Pinterest

Love this recipe?

Like us on Facebook


You'll Also Love

Comment on & Rate this Recipe

I very much hope you enjoyed this recipe!

If you did, please give it a star rating, which will help other people just like you find and enjoy the recipe too 😊

If you have any comments, questions or thoughts on the recipe, be sure to let me know in the comments as well. I read each and every one and would love to hear from you!

Leave a Comment

Your email address will not be published. Required fields are marked *