Rating: 5.00
(10)

Oatmeal Cookie Sandwiches with Maple Ganache

By Rachel
August 28, 2021

These oatmeal cookie sandwiches are a combination of chewy oatmeal cookies and creamy maple ganache. Fail proof oatmeal cookies turn out perfectly every time. An easy ganache made of heavy cream, white chocolate, cinnamon, and maple syrup whips into the perfect frosting.

stacked sandwich cookies on a cooling rack

Highlights of these oatmeal cookies:

  • Thick chewy oatmeal cookies
  • Creamy maple filling
  • Slight crispy edges
  • soft cookie center
  • Rich white chocolate ganache
  • Hints of cinnamon
  • Family favorite

Grocery list for the white chocolate ganache sandwich cookies:

  • Flour
  • Baking Soda
  • Baking Powder
  • Salt
  • Cinnamon
  • Butter
  • Granulated Sugar
  • Brown Sugar
  • Large Eggs
  • Vanilla Extract
  • Old Fashioned Oats
  • White Chocolate Chips or chopped chocolate
  • Maple Syrup (or maple extract)
  • Heavy cream, must use heavy whipping cream!
oatmeal sandwich cookie on parchment paper

Tools I used for this recipe:

  • USA Pan Half Sheet Pan – my go-to sheet pans, these are truly non-stick and clean up nicely.
  • KitchenAid 6 Qt. Stand Mixer – I always recommend a stand mixer as it saves time and helps to keep baked goods consistent.
  • Rubber Spatula – a must for any home baker! Perfect for scrapping cookie dough out of the mixing bowl.
  • Portion Scoops – my go to for getting even sized cookies that bake perfectly each time!
  • Fabric Piping Bagmy favorite piping bag for cookie sandwiches or cupcakes. Cloth is easy to clean, durable, and reusable.
whipped maple ganache in a mixing bowl

Creamy whipped maple ganache can be made in advance!

If you like these oatmeal cookie sandwiches, you’ll love…

Chewy Snickerdoodle Cookie Sandwiches

Lemon Poppy Seed Shortbread Sandwich Cookies

Funfetti Shortbread Sandwich Cookies

Shortbread Sandwich Cookies with Chocolate Ganache Filling

How long is ganache good for?

I like to keep this whipped ganache in the fridge, where in an airtight container it will stay fresh for up to a month! Simply allow to come to room temperature before using again.

Can ganache set out?

Yes, it can sit out at room temperature for up to 2 days, covered. After that it should be chilled to store.

sandwich cookies stacked with a glass of milk

Quick Steps:

  • Heat cream, maple syrup, and vanilla
  • Pour over white chocolate
  • Allow to cool
  • Whip until fluffy, transfer into a piping bag
  • Preheat oven
  • Combine dry ingredients
  • Cream butters and sugars
  • Mix in eggs, and vanilla
  • Mix in dry ingredients
  • Fold in oats
  • Bake cookies and allow to cool
  • Sandwich together with ganache
  • Enjoy!

Chewy oatmeal cookies make the perfect sandwich cookie

Instructions for the sandwich cookies:

For the Maple Ganache:

  • Warm the heavy whipping cream in a saucepan over medium heat, add in the maple syrup and vanilla extract. Whisk to combine, heat for 6-8 minutes, stirring often.
  • Add the chopped white chocolate into a large mixing bowl or into the bowl of a stand mixer. Pour the warm maple cream mixture over the white chocolate and stir gently as the chocolate starts the melt. The cream should completely melt the chocolate, stir until you have a smooth mixture. It will still be very runny. Cover and allow to set in the fridge overnight or for at least 3 hours.
  • After the ganache has set and cooled completely, use a stand or hand mixer fitted with a whisk attachment and whip for 6-8 minutes until stiff. After a few minutes of whipping check the consistency of the ganache, you want a stiff frosting that will hold its shape.
  • Once the whipped ganache is done it will be thick and much lighter in color. Transfer to a piping bag fitted with a tip of choice. You can also spread the frosting between the cookies with a knife. If you plan to make the frosting ahead of time keep chilled until an hour before you plan to use it, allow to come to room temperature before piping.

For the Oatmeal Cookies:

  • In a medium mixing bowl, combine the flour, baking powder, baking soda, cinnamon and salt, set aside. Line baking sheets with parchment paper or silpat liners.
  • In the bowl of a stand mixer fitted with a paddle attachment or a hand mixer, combine the butter and sugars. Cream for 3-4 minutes until light and fluffy. Add in the eggs, one at a time, and the vanilla. Scrape down sides and slowly add in the dry ingredients. Mix until fully combined. Add in the oats and gently mix in on low, until incorporated.
  • Cover and allow the dough to chill for 20-30 minutes, overnight if needed. Preheat oven to 350 degrees F.
  • Using a portion scoop, scoop even sized scoops of cookie dough – roughly 1 1/2 tablespoons per cookie. Arrange evenly on a lined cookie sheet, leaving 2 inches between each cookie. Bake for 9-11 minutes until golden brown, cookies will still be soft in the middle. Allow to cool for a few minutes on the cookie sheet before transferring to a cooling rack. Repeat with the remaining dough, allow cookies to cool completely before frosting.
  • Pipe or spread the prepared maple ganache frosting between two cooled oatmeal cookies, sandwich and repeat. These are best enjoy the same day, but will keep for 2-3 days in the fridge if stored in an airtight container.

Notes:

*You must use heavy whipping cream in the ganache in order for it to whip.

*Any leftover ganache will keep in the fridge for up to a week.

*Use a round cookie cutter to scoot warm, freshly baked cookies into perfect circles!

stacked oatmeal sandwich cookies with maple ganache
oatmeal cookie sandwiches

Oatmeal Cookie Sandwiches With Maple Ganache

5 from 10 votes
Classic chewy oatmeal cookies sandwiched together with whipped maple ganache
Servings 15 Sandwich Cookies
Prep Time 25 minutes
Cook Time 15 minutes
Chilling time 3 hours
Total Time 3 hours 40 minutes

Ingredients
 
 

For the Maple Ganache:

  • 12 oz. Heavy Whipping Cream*
  • 18 oz. White chocolate, chopped
  • 1 tbsp Vanilla extract
  • 1/4 cup Pure Maple Syrup

For the Oatmeal Cookies:

  • 2 1/4 cups All-purpose flour
  • 1 tsp Baking powder
  • 1 tsp Baking soda
  • 1 tsp Salt
  • 1 tbsp Ground cinnamon
  • 1 cup Unsalted butter, softened
  • 1 cup Granulated Sugar
  • 1 cup Light brown sugar, packed
  • 2 Eggs, room temperature
  • 1 tbsp Vanilla extract
  • 2 cups Old-fashioned whole rolled oats, not quick oats

Instructions
 

For the Maple Ganache:

  • Warm the heavy whipping cream in a saucepan over medium heat, add in the maple syrup and vanilla extract. Whisk to combine, heat for 6-8 minutes, stirring often.
  • Add the chopped white chocolate into a large mixing bowl or into the bowl of a stand mixer. Pour the warm maple cream mixture over the white chocolate and stir gently as the chocolate starts the melt. The cream should completely melt the chocolate, stir until you have a smooth mixture. It will still be very runny. Cover and allow to set in the fridge overnight or for at least 3 hours.
  • After the ganache has set and cooled completely, use a stand or hand mixer fitted with a whisk attachment and whip for 6-8 minutes until stiff. After a few minutes of whipping check the consistency of the ganache, you want a stiff frosting that will hold its shape.
  • Once the whipped ganache is done it will be thick and much lighter in color. Transfer to a piping bag fitted with a tip of choice. You can also spread the frosting between the cookies with a knife. If you plan to make the frosting ahead of time keep chilled until an hour before you plan to use it, allow to come to room temperature before piping.

For the Oatmeal Cookies:

  • In a medium mixing bowl, combine the flour, baking powder, baking soda, cinnamon and salt, set aside. Line baking sheets with parchment paper or silpat liners.
  • In the bowl of a stand mixer fitted with a paddle attachment or a hand mixer, combine the butter and sugars. Cream for 3-4 minutes until light and fluffy. Add in the eggs, one at a time, and the vanilla. Scrape down sides and slowly add in the dry ingredients. Mix until fully combined. Add in the oats and gently mix in on low, until incorporated.
  • Cover and allow the dough to chill for 20-30 minutes, overnight if needed. Preheat oven to 350 degrees F.
  • Using a portion scoop, scoop even sized scoops of cookie dough – roughly 1 1/2 tablespoons per cookie. Arrange evenly on a lined cookie sheet, leaving 2 inches between each cookie. Bake for 9-11 minutes until golden brown, cookies will still be soft in the middle. Allow to cool for a few minutes on the cookie sheet before transferring to a cooling rack. Repeat with the remaining dough, allow cookies to cool completely before frosting.
  • Pipe or spread the prepared maple ganache frosting between two cooled oatmeal cookies, sandwich and repeat. These are best enjoy the same day, but will keep for 2-3 days in the fridge if stored in an airtight container.

Notes

*You must use heavy whipping cream in the ganache in order for it to whip.
*Any leftover ganache will keep in the fridge for up to a week.

Nutrition

Serving: 1sandwichCalories: 584kcalCarbohydrates: 68gProtein: 6gFat: 33gSaturated Fat: 20gPolyunsaturated Fat: 2gMonounsaturated Fat: 9gTrans Fat: 1gCholesterol: 82mgSodium: 268mgPotassium: 222mgFiber: 2gSugar: 49gVitamin A: 725IUVitamin C: 1mgCalcium: 138mgIron: 1mg
Author: The Hearty Life
Calories: 584kcal
Cost: $$
Course: Dessert
Cuisine: American
Keyword: Cookie Sandwiches, Cookies, ganache, Oatmeal Cookies

Did you make this recipe?

Please let me know how it turned out for you! Leave a comment below and tag @theheartylife on Instagram and hashtag it #theheartylife.

oatmeal sandwich cookie with a bite taken out
5 from 10 votes (10 ratings without comment)

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