Sweet, colorful and with a pillowy soft marshmallow frosting, these funfetti cookie sandwiches might just become your next favorite sweet treat!
Thinking of whipping something up as a treat for your kiddos? Or maybe you’re just in the mood to bake and experiment in the kitchen. Whatever it is, these funfetti cookie sandwiches are just perfect!
What You Need to Make Funfetti Cookie Sandwiches
1 box vanilla cake mix
1⁄4 cup vegetable oil
1 tsp vanilla extract
1⁄4 cup uncoated sprinkles
Marshmallow icing ingredients
1 7.5oz jar of marshmallow fluff
½ stick butter
2 tsp vanilla
How To Make Funfetti Cookie Sandwiches
Preheat your oven to 375.
Add cake mix, eggs, oil, vanilla and sprinkles to a large bowl and stir, mix completely.
Use a small cookie scoop to scoop even balls of cookie dough onto a baking sheet lined with parchment paper.
Make sure to leave about 2 inches between each ball of dough to allow them room to expand.
Bake at 375 for 10-12 minutes. Allow to cool.
How to Make Marshmallow Icing
Beat the marshmallow fluff and butter until its smooth.
Add in the confectioners sugar a little at a time while beating until the mixture is smooth.
Add one scoop of icing to one cookie and top with another to create a sandwich.
Roll the sandwich in the sprinkles.
This can be served at room temperature or cold from the fridge for an “ice cream sandwich” experience without the melting!
Tips and Tricks for the Best Cookie Sandwiches
Ready to go ahead and give them a shot? Here’s what you need to know before you do!
Why Did My Cookies Turn Dry?
If you’ve made cookies before, and they seem to turn out dry and crumbly, and you’re worried it might be the case with this one too, here’s what you could be doing wrong.
Using the wrong measurements, especially when it comes to flour (adding too much of it) can cause your cookies to get dry.
Another possible reason could be the fact that your leavening agent (baking powder or baking soda) might have crossed its expiration date, and it isn’t potent enough anymore.
Why Did My Cookies Come Out Flat?
This one’s a common baking mistake that you can actually fix pretty easily.
Cookies usually turn flat because the butter that you use isn’t at the right temperature. The butter should ideally be just cool and soft, but not melted or too soft.
Using liquid or extra soft butter for your cookies can cause them to flatten even before they rise and set.
A good way to get through this is to chill your mixture for a few minutes before you bake it. This will ensure that the butter is still cold enough.
What Other Fillings Can I Use?
If you don’t have marshmallow fluff, you can actually use pretty much any other frosting or filling you prefer.
Stick to the basic vanilla frosting if you prefer a subtle flavor, or try a citrusy variant such as lemon or strawberry buttercream or icing.
And of course, a little natural food coloring in there (and in the cookie mixture) can give it a totally different look too!
Just make sure it is the right texture- not too thick and not too runny. If your filling is thicker than you’d like, you can loosen it up a bit with a teaspoon of milk or water. If it has become runny, chill it for a few minutes before using it.
Just make sure you avoid using wax coated sprinkles, since they tend to have a less appealing texture and feel in the mouth.
Can I Make and Store the Funfetti Cookie Sandwiches?
Of course you can! The best way to go about this, however, is to batch make the cookies and store them in an airtight container or a resealable freezer safe bag and pop it in the freezer. Just store the cookies, and right before you want to have them, assemble them with the marshmallow filling!
Another option is to assemble the cookie sandwich with the filling and then pop it in the freezer. This slightly moist and soft cookie sandwich can be served as an ice-cream sandwich that way!
Funfetti Cookie Sandwiches
- 1 box vanilla cake mix
- ¼ cup vegetable oil
- 2 eggs
- 1 tbsp vanilla extract
- ¼ cup uncoated sprinkles
Marshmallow Icing Ingredients
- 7.5 oz jar of marshmallow fluff
- ½ stick butter
- 2 tsp vanilla
How To Make Funfetti Cookies
- Preheat your oven to 375.
- Add cake mix, eggs, oil, vanilla and sprinkles to a large bowl and stir, mix completely.
- Use a small cookie scoop to scoop even balls of cookie dough onto a baking sheet lined with parchment paper.
- Make sure to leave about 2 inches between each ball of dough to allow them room to expand.
- Bake at 375 for 10-12 minutes. Allow to cool.
How To Make Marshmallow Icing
- Beat the marshmallow fluff and butter until its smooth.
- Add in the confectioners sugar a little at a time while beating until the mixture is smooth.
- Add one scoop of icing to one cookie and top with another to create a sandwich.
- Roll the sandwich in the sprinkles.
- This can be served at room temperature or cold from the fridge for an “ice cream sandwich” experience without the melting!
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