There is a woman holding a split oatmeal cookie sandwiched with jam. There are more cookies in the background.

The Best Oatmeal Sandwich cookies

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These delightful oatmeal sandwich cookies are sweetly spiced and filled, for the perfect hand-held snack! This is a quick and easy treat to make, especially to pack in lunch boxes! Fun for the whole family to get involved with!

A white and blue dish which an assortment of sandwich cookies. In front there are some of the cookies split in half.

What oatmeal is best for Oatmeal Sandwich Cookies

For cookies, in general, quick-cook oats are the best choice. Since the oats need very little time to cook to make them soft.

~ Quick-cook oats

  • Similar to rolled oats or old-fashioned oats.
  • They are all rolled flat and thin. This shortens their cook time.
  • Quick-cook oats go through even more processing.
  • They are partially steamed and rolled even thinner.
  • This allows them to cook in a matter of minutes.

~ Rolled oats or old-fashioned oats

  • A great choice for baked cookies.
  • These will result in a chewier cookies.
  • Visually, the oats will be more pronounced.

~ Steal-cut oats, Scottish oats, and oat groats

  • These types of oats are far less processed.
  • They are not recommended to make oatmeal cookies.
  • They need a much longer cook time.

To learn more about oats click here!

There is a woman holding a split oatmeal cookie sandwiched with jam. There are more cookies in the background.

How to store Oatmeal Sandwich Cookies

At room temperature

Depending on what you fill your oatmeal sandwich cookies with, you can store them at room temperature. To store your cookies at room temperature, for optimal freshness, follow these steps.

  • Allow the cookies to come to room temperature.
  • Cover or place in an airtight container.
  • Store on the counter for up to 1 week.

Refrigerator

Yes, you can store oatmeal sandwich cookies in the fridge. The fridge will dry out cookies and baked goods, so it is best to eat them within 1 week for optimal freshness.

  • Allow the cookies to cool to room temperature.
  • Cover the cookies or store in an airtight container.
  • Store in the fridge for up to 7 days.

Frozen

Oatmeal sandwich cookies freeze extremely well! You can freeze them either filled or unfilled.

To freeze your cookies

  • Allow the cookies to cool to room temperature.
  • Place the cookies on a tray and freeze them (either filled or unfilled) for an hour.
  • Place the partially frozen cookies in a freezer bag or airtight container and freeze for up to 3 months.
  • When you are ready to enjoy them, remove from the freezer and allow to defrost at room temperature.
There is a woman holding a oatmeal cookie sandwiched with chocolate. There are more cookies in the background.

Fillings For Oatmeal Sandwich cookies

My favourite filling for these sweet little oatmeal cookies is jam. I love the sweet punch of fruit contrasted with the hearty cookies.

Since oatmeal cookies have such a versatile flavour, they can be filled with a variety of different spreads, depending on what suits your family’s tastes.

~Fruit jam or jelly

  • A bright burst of fruity flavour
  • Doesn’t make the cookies soggy
  • Stores well

~ Buttercream

  • Perhaps the most common filling for cookies
  • Easy to spread or pipe onto the cookies
  • Wont make the cookies soggy
  • Stores well
  • Experiment adding different flavours such as vanilla, orange, or maple extract!
~To make a simple buttercream ~
1. Cream ½ cup softened butter with 4 cups of icing sugar and ¼ teaspoon of salt.
2. With the mixer on low add in 2-3 Tablespoons of cream, or enough to give you a spreadable consistency.

~ Nutella or chocolate ganache

  • Pairs well with these delicately spiced cookies
  • Soft and spreadable
  • Wont make the cookies soggy
  • Stores well
~To make an easy spreadable chocolate ganache ~
1. Chop 120 g quality chocolate and place in a heat proof bowl.
2. Heat ½ cup of heavy cream in a sauce pan, until it starts to steam. Pour this into the bowl with the chocolate.
3. Allow to sit 2-3 minutes to melt the chocolate. Stir.
4. Allow it to cool and thicken about 30 minutes. Stir occasionally.

~Nut butters

  • A delicious sweet and salty spread
  • wont make the cookies soggy
  • easy to spread
  • Stores well
~ If you find that your nut butter is not thick enough, cream it with icing sugar until you have the desired thickness ~
There is a woman squeezing chocolate inside of two oatmeal cookies.

Healthier Oatmeal Cookies

With some simple swap outs, you can make a healthier version of these oatmeal sandwich cookies.

Applesauce

This is a classic trick for making things a little more healthy!

  • Swap out half of the butter in the original recipe with applesauce.

Flour

Exchange the all-purpose flour in this recipe for whole wheat flour or your flour of choice. Since the main bulk of these cookies is from the oats, the flour can be easily swapped out without much alteration to the cookies.

Sugar Substitutes

There are so many substitutions for sugar that you can get your hands on now. When choosing a sugar substitute make sure you check the ratio of the substitute compared to regular sugar. They are often not a 1:1 replacement.

This is a list of my commonly used sugar substitutes and how much to use!

A sugar conversion chart one column is green and one is pink

How to make Oatmeal Sandwich Cookies

Ingredients

¾ cup softened butter 175 ml

1 cup brown sugar 200 g

½ cup white sugar 100 g

1 egg

2 teaspoons vanilla 10 ml

⅔ cup all-purpose flour 100 g

1 teaspoon baking powder 3 ml

1 teaspoon cinnamon 2.5 ml

3 cups quick oats 300 g

1 ½ cups jam or filling of choice 375 ml

Method

  1. Preheat oven to 350 ºF (180 ºC)
  2. In a large bowl, cream together the butter and sugars.
  3. Beat in the egg and vanilla until it is light and fluffy.
  4. Sprinkle on top, baking powder and cinnamon.
  5. Stir into the creamed mixture.
  6. Blend in the oats and flour, just until you have a smooth dough.
  7. Spoon 1-2 Tablespoons worth of dough onto a lined baking sheet.
  8. Bake for 10-12 minutes or until the edges are golden and the centre is set.
  9. Allow to cool to room temperature.
  10. Spread the jam (or filling of choice) on the flat bottom of the cookies. Sandwich together.
There is a woman holding a split oatmeal cookie sandwiched with jam. There are more cookies in the background.

The Best Oatmeal Sandwich cookies

flour and filigree
Sweetly spiced chewy oatmeal cookies sandwiched with a fruity jam filling. The perfect hand held snack for kids and adults alike!
Prep Time 25 minutes
Cook Time 12 minutes
Total Time 37 minutes
Course Dessert, Snack
Cuisine American
Servings 30 cookies
Calories 140 kcal

Ingredients
  

  • ¾ cup softened butter 175 ml
  • 1 cup brown sugar 200 g
  • ½ cup white sugar 100 g
  • 1 egg
  • 2 teaspoons vanilla 10 ml
  • cup all-purpose flour 100 g
  • 1 teaspoon baking powder 3 ml
  • 1 teaspoon cinnamon 2.5 ml
  • 3 cups quick oats 300 g
  • 1 ½ cups jam or filling of choice 375 ml

Instructions
 

  • Preheat oven to 350 ºF (180 ºC)
  • In a large bowl, cream together the butter and sugars.
  • Beat in the egg and vanilla until it is light and fluffy.
  • Sprinkle on top the baking powder and cinnamon.
  • Stir into the creamed mixture.
  • Blend in the oats and flour, just until you have a smooth dough.
  • Spoon 1-2 Tablespoons worth of dough onto a lined baking sheet.
  • Bake for 10-12 minutes or until the edges are golden and the centre is set.
  • Allow to cool to room temperature.
  • Spread the jam (or filling of choice) on the flat bottom of the cookies. Sandwich together.
Keyword cookie, kid-friendly, kidscancook, snack

Looking for some more treats that work perfectly for picnics or lunch boxes? These are our family favourites! Homemade, Oreo Inspired, Sandwich Cookies, Easy Light and Crispy Cheese Crackers, Recipe for Theme Park Soft Pretzels

A pinterest pin for oatmeal sandwich cookies. In the photo a woman is holding a sandwich cookie split in half. The inside is filled with a chocolate spread.

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