If you’re looking for a delightful twist on classic cookies that brings together nostalgia and irresistible creaminess, this Homemade Oatmeal Pies Recipe is exactly what your kitchen needs. These soft, chewy oatmeal cookies sandwich a luscious marshmallow fluff filling that melts in your mouth with every bite. The cozy spices and rich molasses in the cookie dough pair perfectly with the sweet, fluffy center to create an unforgettable treat. Whether for a family gathering, a special dessert, or a fun bake with friends, these oatmeal pies will quickly become your go-to favorite.

Ingredients You’ll Need
This recipe calls for simple pantry staples that blend seamlessly to deliver amazing flavor and texture. Each ingredient has a purpose, from the quick oats providing hearty chewiness to the cinnamon and nutmeg adding a warm, inviting aroma.
- 2 cups quick cooking oats (divided): Half gets pulsed into powder for a tender crumb, while the rest adds classic oatmeal texture.
- 1 1/2 cups all-purpose flour: The backbone of the cookie, ensuring just the right structure.
- 1 teaspoon baking soda: Helps the cookies spread and rise perfectly.
- 1/2 teaspoon salt: Balances sweetness and enhances flavor depth.
- 3/4 teaspoon cinnamon: Adds warm, spicy notes that make these pies feel like comfort food.
- 1/4 teaspoon ground nutmeg: A subtle layer of earthy spice to complement the cinnamon.
- 1 cup salted butter (softened): Used in the dough for richness and moisture.
- 1 cup packed light brown sugar: Provides deep, caramel-like sweetness and chewiness.
- 1/2 cup granulated sugar: Adds a bit of crispness to the cookie exterior.
- 2 Tablespoons molasses: Injects a rich, slightly smoky undertone that makes these oatmeal pies stand out.
- 2 eggs: Bind the dough and bring tenderness.
- 1 cup salted butter (softened): Used again for the filling, giving it a creamy base.
- 1/2 teaspoon clear vanilla extract: Adds fragrant sweetness without coloring the white filling.
- 7 oz. container marshmallow fluff: Creates the iconic, fluffy filling that melts beautifully between cookies.
- 2 cups powdered sugar: Sweetens and thickens the marshmallow filling to the perfect consistency.
How to Make Homemade Oatmeal Pies Recipe
Step 1: Preheat Your Oven
Start by setting your oven to 350° F so it will be perfectly heated when you’re ready to bake. This ensures your oatmeal pies bake evenly, giving them that golden edge and chewy center everyone loves.
Step 2: Prepare the Oats
Pulse 1/2 cup of the quick-cooking oats in a food processor until they become a fine powder. This step is key to creating a softer texture inside your cookies while still maintaining the delightful oatmeal bite.
Step 3: Mix Dry Ingredients
In a medium bowl, whisk together the remaining 1 1/2 cups of quick oats, the oat powder you just made, flour, baking soda, salt, cinnamon, and nutmeg. This blend of dry ingredients infuses the cookies with their signature flavor and ensures every bite is perfectly spiced.
Step 4: Cream Butter and Sugars
In a separate large mixing bowl, beat the softened butter with both the brown and granulated sugars. Mixing until smooth and creamy ensures the sugars dissolve well and the dough will have a soft, chewy texture.
Step 5: Add Molasses and Eggs
Stir in the molasses and eggs, beating the mixture until fluffy and pale. The molasses introduces a rich depth of flavor, while the eggs help bind the dough and incorporate air for a light texture.
Step 6: Combine Wet and Dry Ingredients
Gently fold the dry ingredients into your butter mixture until just combined. Avoid overmixing, which can make the cookies tough; once the ingredients come together, your dough is ready to shape.
Step 7: Shape the Dough
Drop 2-tablespoon scoops of dough onto a baking sheet, leaving plenty of room since these cookies will spread. For larger pies (the size we love!), feel free to increase the scoop size. This is your moment to customize each pie to your desired size and indulgence level.
Step 8: Bake the Cookies
Bake for about 10 minutes, or until the centers spread out flat and appear set but still soft. Removing the cookies at just the right moment keeps them tender inside with a slight crisp on the edges, perfect for sandwiching the filling.
Step 9: Cool and Chill
Let the cookies cool briefly on the pan before transferring them to a rack. Then, pop them into the freezer for at least 30 minutes. Chilling is essential as it firms up the cookies, making it easier to sandwich the marshmallow filling without squishing your beautiful pies.
How to Serve Homemade Oatmeal Pies Recipe

Garnishes
While these oatmeal pies shine as is, a light dusting of powdered sugar or a drizzle of melted dark chocolate adds a lovely finishing touch that elevates their appearance and flavor. Toasted chopped nuts sprinkled on top can also provide an inviting crunch contrast.
Side Dishes
Serve your oatmeal pies alongside a cup of hot chai tea, rich coffee, or even a cold glass of milk to complement their cozy sweetness. For a brunch twist, pair them with fresh fruit or yogurt for a balanced and inviting spread.
Creative Ways to Present
Make these pies the centerpiece of a dessert platter by stacking them in a rustic basket, tied with twine for a charming homemade gift idea. Alternatively, sandwich the marshmallow filling with flavored spreads like salted caramel or peanut butter for a fun variation that guests won’t forget.
Make Ahead and Storage
Storing Leftovers
You can keep leftover oatmeal pies fresh by storing them in an airtight container at room temperature for up to 3 days. This helps preserve that tender chewiness of the cookie and the fluffiness of the filling without drying out.
Freezing
For longer storage, freeze the assembled pies by wrapping each one individually in plastic wrap and placing them in a freezer-safe bag. Frozen oatmeal pies keep beautifully for up to 2 months and can be defrosted overnight in the fridge.
Reheating
If you like your pies slightly warm, reheat gently in a low oven (around 275°F) for 5-7 minutes or until just warmed through. Avoid microwaving to keep the cookies from becoming too soft or the filling melting too quickly.
FAQs
Can I use old-fashioned oats instead of quick cooking oats?
Yes, but keep in mind that old-fashioned oats will create a chewier texture and may change the cookie’s spread and softness slightly. Quick cooking oats are preferred for their ability to blend smoothly and bake evenly.
What can I use if I don’t have marshmallow fluff?
If marshmallow fluff isn’t available, you can make a homemade marshmallow cream or even use softened cream cheese mixed with powdered sugar as a creamy alternative, though it will change the classic flavor profile.
Is it okay to use regular vanilla extract instead of clear vanilla extract?
Absolutely! The recipe calls for clear vanilla extract mainly to keep the filling’s white appearance, but regular vanilla extract will taste just as delicious and won’t affect the overall texture.
Can I make the dough ahead of time?
You can prepare the cookie dough in advance and refrigerate it for up to 2 days before baking. This resting time actually helps intensify flavors and improve texture, just remember to let it come to room temperature before scooping.
Why do I need to freeze the cookies before assembling?
Freezing the cookies firms them up, which prevents the marshmallow filling from squeezing out or flattening the cookies when pressed together. This step keeps your pies neat and delicious every time.
Final Thoughts
I’m genuinely excited for you to dive into this Homemade Oatmeal Pies Recipe. It’s such a rewarding bake that combines comfort, nostalgia, and a little bit of kitchen magic. Once you try these pies, you’ll find yourself craving their chewy texture and fluffy filling again and again. So gather your ingredients, roll up your sleeves, and enjoy creating a dessert that’s sure to become a beloved favorite!
Print
Homemade Oatmeal Pies Recipe
- Prep Time: 10 minutes
- Cook Time: 17 minutes
- Total Time: 27 minutes
- Yield: 11 pies
- Category: Dessert
- Method: Baking
- Cuisine: American
Description
These Homemade Oatmeal Pies are a delightful twist on classic oatmeal cookies, featuring a soft, spiced oat cookie sandwich filled with a sweet, fluffy marshmallow filling. They offer a comforting blend of cinnamon and nutmeg flavors with a luscious vanilla-molasses enriched buttercream, perfect for sharing or enjoying as a special treat.
Ingredients
Cookies
- 2 cups quick cooking oats (divided)
- 1 1/2 cups all-purpose flour
- 1 teaspoon baking soda
- 1/2 teaspoon salt
- 3/4 teaspoon cinnamon
- 1/4 teaspoon ground nutmeg
- 1 cup salted butter (softened)
- 1 cup packed light brown sugar
- 1/2 cup granulated sugar
- 2 tablespoons molasses
- 2 eggs
Filling
- 1 cup salted butter (softened)
- 1/2 teaspoon clear vanilla extract (regular vanilla can be used)
- 7 oz container marshmallow fluff
- 2 cups powdered sugar
Instructions
- Preheat the oven: Set your oven to 350° F (175° C) so it can reach the perfect temperature for baking your oatmeal cookies evenly.
- Prepare ground oats: Using a food processor, pulse half a cup of the quick-cooking oats until they become a fine powder. This adds a nice texture variation and binds the dough.
- Mix dry ingredients: In a medium bowl, whisk together 1 1/2 cups quick oats, the ground oats, all-purpose flour, baking soda, salt, cinnamon, and nutmeg to evenly distribute the spices and leavening agent.
- Cream butter and sugars: In a separate mixing bowl, beat together softened butter, light brown sugar, and granulated sugar until the mixture is smooth and well combined, which helps create a tender cookie.
- Add molasses and eggs: Incorporate the molasses and eggs into the butter mixture and continue beating until the mixture is fluffy and light, giving the cookies moisture and richness.
- Combine dry and wet ingredients: Gradually add the dry ingredients to the wet mixture, stirring well until the dough comes together uniformly.
- Shape the dough: Drop 2 tablespoon scoops of the dough onto a baking sheet, spacing them adequately as they will spread. Adjust scoop size to make smaller or super-sized cookie pies as desired.
- Bake the cookies: Bake in the preheated oven for about 10 minutes or until the centers have spread and appear set. Remove and allow to cool for 2-3 minutes before transferring them to a cooling rack.
- Chill the cookies: Place the cooled cookies in the freezer for at least 30 minutes. This step firms them up so the marshmallow filling can be pressed between two cookies without squishing.
- Prepare the filling: Beat together softened butter, vanilla extract, marshmallow fluff, and powdered sugar until smooth and fluffy to create a sweet, creamy filling.
- Assemble the oatmeal pies: Spread a generous amount of filling on the bottom of one cookie and sandwich with another cookie. Press gently to spread the filling evenly without breaking the cookies.
Notes
- Using clear vanilla extract helps keep the filling white and visually appealing, but regular vanilla can be substituted without affecting flavor.
- Freezing the cookies before filling helps prevent the cookies from crumbling or the filling from squishing out.
- Adjust the size of the cookie dough scoops to make smaller or larger pies according to your preference.
- For a nut-free version, ensure all ingredients and brands you use are free from nut contamination.
- Store assembled pies in an airtight container in the refrigerator for up to 5 days for best freshness.

