Marshmallow Cookie Bars. In any flavour you like.

Marshmallow Cookie Bars. Easy to make in any flavour you like. The shortbread cookie bottom gets topped by a homemade marshmallow layer made from your favourite flavour of Jello!

Marshmallow Cookie Bars. In any flavour you like.

Originally published Nov 2016.

These Marshmallow Cookie Bars are another common cookie treat around Christmas time here in Newfoundland.

My biggest issue was the marshmallow layer on top. A couple of recipes that I’d been given over the years produced a marshmallow that was pretty lacklustre, both in flavour and in texture.

Lime is a great flavour for this recipe but any flavour Jello can be used.

The marshmallow was relatively flavourless and worse, the marshmallow was more like whipped jelly than anything else.

My solution to improve this recipe was first to make a slightly thicker base for the cookies. That extra strength would hold up better to support a thicker and denser layer of marshmallow.

Marshmallow Cookie Bars.

Secondly, I decided to use a very old recipe which I believe at one time came on an insert in Jello packages. The recipe was a very simple one for making homemade marshmallows from Jello jelly powder.

I whipped up the recipe as directed and spread the thick gooey warm marshmallow all over the prepared, cooled cookie base. I then sprinkled on some dried coconut for decoration and waited for the marshmallow layer to cool and set.

A real family favourite.

Honestly, I loved the way these turned out and I am a bit ashamed to say that I’ve eaten a few too many. It really was like stepping back into kid-dom, tasting these.

Marshmallow Cookie Bars. In any flavour you like.

Just as I was writing this post, lunch guests arrived at my front door. My Sister Brenda is visiting from Alberta and she came to lunch with my Mom and Dad, my sister Barb and her daughter, Taylor.

After our lunch of Dijon Brown Sugar Glazed Ham and various potato and pasta salads, I put out a selection of goodies that I’d been baking for the upcoming Christmas season.

These Lime Marshmallow squares were the hit of the cookie of the cookie platters! I guess maybe my family are all kids at heart like me.

Looking for more cookie inspiration?

If you liked this recipe you many want to check out this great collection of No Bake Cookies that was incredibly popular during our last Holiday season.

No Bake Christmas Cookies

Like this Marshmallow Cookie Bars recipe?

Find over 200 more outstanding cookie recipes by browsing the photo links in our Cookie Recipes Gallery.

It’s easy to keep up with the latest home style cooking & baking ideas from Rock Recipes. Be sure to follow Rock Recipes Facebook Page and follow us on Instagram. Plus you’ll see daily recipe suggestions from decadent desserts to quick delicious weekday meals too.

You can also sign up for our FREE newsletter to know immediately when new recipes are added. You’ll get weekly suggestions for great family friendly meals and desserts too!

Continue to Content

Marshmallow Cookie Bars - in any flavour you like.

Yield: 36 cookie bars

Prep Time: 30 minutes

Cook Time: 35 minutes

Total Time: 1 hour 5 minutes

Marshmallow Cookie Bars. Easy to make in any flavour you like. The shortbread cookie bottom gets topped by a homemade marshmallow layer made from your favourite flavour of Jello!

Print

Ingredients

For the cookie base

Toggle ingredient group

• 1 cup butter, room temperature
• 1/2 cup brown sugar
• 1 tsp vanilla extract
• 2 cups flour

For the marshmallow top layer

Toggle ingredient group

• 1 cup water
• 2 pkg lime or other flavour Jello powder, 3 oz/85 g each
• 1 1/2 cups sugar
• 1/4 cup light corn syrup
• 1/2 cup dried unsweetened coconut, to garnish top; optional

Instructions

1. Instructions

For the cookie base.

1. Preheat oven to 325 degrees F.
2. Lightly grease a 9x13 inch baking pan and line it with parchment paper.
3. Cream the butter, brown sugar and vanilla well until light coloured and fluffy.
4. Fold in the flour to form a soft dough.
5. Press the dough evenly into the prepared pan.
6. Bake for 30-35 minutes until golden brown around the edges.
7. Remove from oven and cool completely before adding the top layer.

To prepare the marshmallow layer.

1. NOTE: You are going to want to keep the temperature on low throughout this stage. You don't want the mixture to boil; just keep the heat steady to allow you to fully dissolve the jelly powder and sugar.
2. In a small saucepan bring the water to a boil and reduce the burner setting to low.
3. Add the 2 pkg of Jello powder and stir continuously until it is completely dissolved. This can take 4-5 minutes.
4. Add the sugar and again, continue to stir ver low heat until the sugar is fully dissolved with no sugar grains left at the bottom of the pan. This may take 4-5 more minutes or so.
5. Remove from heat and stir in the corn syrup.
6. Transfer the mixture to a very clean glass or metal bowl or the bowl of your electric mixer.
7. Chill in the fridge for about a half hour, stirring occasionally until the mixture is just lukewarm. It should not be hotter than lukewarm, nor should it me too cold.
8. When the jello mixture reaches the lukewarm point, begin beating it at high speed with the whisk attachment on your electric mixer.
9. Beat for 10-12 minutes or until very thick and fluffy.
10. Spread the marshmallow layer over the cooled cookie layer and sprinkle with coconut if you like. Refrigerate for 6-8 hours or overnight before cutting into cookie bars.
11. Store in airtight containers. These freeze particularly well for several weeks.

Recommended Products

Rock Recipes a participant in the Amazon Services LLC Associates Program, an affiliate advertising program designed to provide a means for us to earn fees by linking to Amazon.com and affiliated sites. Our product recommendations are almost exclusively for those we currently use or have used in the past.

• 
  KitchenAid Professional 6 Quart Bowl Lift Stand Mixer with Food Grinder Attachment, Empire Red
• 
  Rock Recipes: The Best Food From My Newfoundland Kitchen

Nutrition Information

Yield

36

Serving Size

g
Amount Per Serving Calories 130Total Fat 6gSaturated Fat 4gTrans Fat 0gUnsaturated Fat 2gCholesterol 14mgSodium 45mgCarbohydrates 19gFiber 0gSugar 13gProtein 1g

The nutritional information provided is automatically calculated by third party software and is meant as a guideline only. Exact accuracy is not guaranteed. For recipes where all ingredients may not be used entirely, such as those with coatings on meats, or with sauces or dressings for example, calorie & nutritional values per serving will likely be somewhat lower than indicated.

Did you like this recipe?

Do you love our "Real food recipes for real people'? Share the recipe on Facebook to let your friends know about us. They'll thank you for it.