Oatmeal Whoopie Pies

Oatmeal whoopie pies are a delicious treat everyone will love. Rich, creamy buttercream frosting is sandwiched between two soft, chewy oatmeal cookies to recreate the flavor of everyone’s favorite childhood treat at home.

I love sweets of all kinds, but one of my favorites has always been oatmeal cream pies. I loved them when I was a kid, and I still do, today. My version takes the sensibilities of the classic and kicks it up a notch with homemade filling and homemade oatmeal cookies. They’re absolutely delicious and easy to make, and everyone always comes running back for more.

Why You’ll Love This Oatmeal Whoopie Pies Recipe

• It uses simple kitchen staples for the cookie dough and the frosting.
• It’s an easy recipe that only makes about 25 minutes from start to finish.
• The soft, chewy oatmeal cookies and buttercream filling are an even richer, more delicious version of the classic.
• It’s perfect for weeknight, desserts, afternoon snacks, or parties.

Ingredients

Everything you need to make this recipe is either in your kitchen right now or a quick trip to the grocery store away!

For the Cookies

• 1 cup melted unsalted butter
• 1 cup packed light or dark brown sugar
• 1/2 cup white sugar
• 1 teaspoon baking soda
• 1/2 teaspoon fine salt
• 1 teaspoon ground cinnamon
• 1 teaspoon vanilla extract (I have been using Watkins All Natural Vanilla Extract and love it!
• 3 cups quick cooking oats
• 1 1/2 cups all-purpose flour
• 2 large eggs

For the Frosting Filling

• 3 cups of powdered sugar
• 1 cup softened unsalted butter
• 3 tablespoons half + half
• 1 1/4 teaspoons vanilla extract
• 1/8 teaspoon fine salt

How to Make Oatmeal Whoopie Pies

Both the oatmeal cookies and filling for these whoopie pies are easy to make and require no advanced cooking skills whatsoever. They’re so simple.

For the Cookies

1. Preheat the oven to 350 degrees and line a baking sheet with parchment paper.
2. Melt the butter and allow it to cool for 5 minutes. Then, mix it with the sugars. Add the eggs and vanilla and mix again.
3. Add the flour, baking soda, and cinnamon, and stir until combined.
4. Use a 3-tablespoon cookie scoop or large spoon to drop the dough onto the baking sheet. Bake for 10 to 13 minutes until the edges are golden brown.
5. Remove the cookies and let them cool on the baking sheet for 10 minutes. Slide the cookies onto a wire rack and cool completely. Use a new piece of parchment paper and follow directions above to make the rest of the whoopie pies.

For the Filling

1. Cream the butter until fluffy in a stand mixer. Then, add the powdered sugar and mix for 2 minutes. Scrape down the sides if necessary and mix again.
2. Add the half and half and vanilla and beat for another 2 minutes or until well combined and fluffy.

Make the Whoopie Pies

1. Turn a cooled cookie upside down and add a layer of frosting. Top with another cookie.
2. Repeat until all the whoopie pies are made and enjoy!

Substitutions and Variations

• Add cocoa powder to the frosting to make a chocolate filling.
• Use any of your favorite cookie dough variations to make all kinds of whoopie pies.
• You can use whipped topping or store-bought frosting in a pinch.

Equipment

• Measuring cups and spoons
• Mixing bowls
• Stand mixer or hand mixer
• Baking sheet
• Parchment paper, I use the precut sheets
• Wire cooling rack
• Cookie scoop, I use a 3 inch cookie scoop or large spoon

Storage

Store these oatmeal whoopie pies at room temperature for up to 3 days in an air-tight container. You can also refrigerate them for up to 5 days.

For longer storage, wrap the whoopie pies in plastic wrap and freeze them for up to 2 months in an air-tight, freezer-safe container or heavy-duty freezer bag.

What to Serve with Oatmeal Cookie Whoopie Pies

These cookies are delicious with a glass of milk or a cup of coffee or tea. They also make a delicious dessert after a classic dinner, like roasted chicken, pot roast, or pork chops.

Tips for the Best Oatmeal Whoopie Pie

• Remove your cookies as soon as the edges are golden. The centers won’t be done, but carryover baking time will finish them to perfection.
• Fully soften your butter for the richest, fluffiest frosting.
• Fully cool your oatmeal cookies before frosting them. Otherwise the frosting will melt and slide off the cookies.

More Oatmeal Cookie Recipes

If you love oatmeal cookies, then check out some of my other favorites.

• Gluten-Free Chocolate Oatmeal Cookies
• Air Fryer Chocolate Chip Oatmeal Cookies
• White Chocolate Oatmeal Christmas Cookies

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