Homemade Oatmeal Cream Pies (Soft, Chewy & Better Than Store-Bought!)

There’s something about homemade oatmeal cream pies that takes you straight back to childhood. Those soft, chewy oatmeal cookies with a thick layer of sweet, fluffy cream filling were always such a special treat.

If you grew up eating Little Debbie Oatmeal Creme Pies, you’re going to love this homemade version!

These homemade oatmeal cream pies have everything you remember: soft brown sugar oatmeal cookies, warm cinnamon flavor, a hint of molasses, and a generous layer of marshmallow buttercream filling.

The best part? They’re surprisingly easy to make from scratch, using simple ingredients you probably already have in your pantry.

Whether you’re baking for a family gathering, packing lunchbox treats, or just craving an old-fashioned cookie sandwich, this recipe is one worth keeping.

Why You’ll Love These Oatmeal Cream Pies

These aren’t your ordinary oatmeal cookies. They’re soft, chewy, and sandwiched together with a fluffy vanilla marshmallow filling.

• Soft and chewy: Brown sugar and molasses help keep the cookies tender.
• Old-fashioned flavor: Cinnamon, oats, and a little clove give them a nostalgic homemade taste.
• Thick cream filling: Sweet marshmallow buttercream makes every bite extra special.
• Perfect for sharing: Great for bake sales, holiday cookie trays, and family gatherings.
• Make-ahead friendly: You can prepare the cookies in advance and fill them later.

And unlike packaged oatmeal cream pies, you know exactly what goes into every batch.

Ingredients for Homemade Oatmeal Cream Pies

For the Oatmeal Cookies

• 1 cup unsalted butter, softened
• 1 cup packed dark brown sugar
• ½ cup granulated sugar
• 2 large eggs
• 1 tablespoon molasses
• 1 teaspoon vanilla extract
• 1½ cups all-purpose flour
• 1 teaspoon baking soda
• 1 teaspoon ground cinnamon
• ¼ teaspoon ground cloves
• ½ teaspoon salt
• 3 cups quick oats

For the Marshmallow Cream Filling

• ¾ cup unsalted butter, softened
• 2 cups powdered sugar
• 1 (7-ounce) jar marshmallow fluff
• 1 teaspoon vanilla extract

A Few Important Ingredient Notes

Quick oats: These give the cookies their classic soft, chewy texture. Old-fashioned rolled oats create a coarser cookie and may change how the dough spreads.

Dark brown sugar: Adds moisture, a rich caramel-like flavor, and that signature chewy texture.

Molasses: Just one tablespoon adds depth and helps create the familiar oatmeal cream pie flavor.

Marshmallow fluff: This is what makes the filling light, sweet, and wonderfully fluffy.

Butter: Use softened butter, not melted butter, for the cookies and filling.

How to Make Homemade Oatmeal Cream Pies

Step 1: Prepare Your Baking Sheets

Preheat your oven to 350°F (175°C).

Line two large baking sheets with parchment paper to prevent sticking and make cleanup easier.

Step 2: Cream the Butter and Sugars

In a large mixing bowl, beat the softened butter, dark brown sugar, and granulated sugar together for approximately 2–3 minutes, until light and fluffy.

Add the eggs, molasses, and vanilla extract.

Beat until everything is smooth and well combined.

Step 3: Mix the Dry Ingredients

In a separate bowl, whisk together the flour, baking soda, cinnamon, ground cloves, and salt.

Gradually add the dry ingredients to the butter mixture, mixing on low speed just until combined.

Fold in the quick oats with a spatula.

The dough should be thick, soft, and slightly sticky.

Step 4: Scoop the Cookies

Using a cookie scoop, portion the dough into approximately 2-tablespoon balls.

Place them about 3 inches apart on the prepared baking sheets.

Gently flatten each portion slightly with your hand.

Try to keep the cookies similar in size so they’re easier to match when assembling the sandwiches.

Step 5: Bake Until Golden

Bake for 10–12 minutes, or until the edges are lightly golden and the centers look just set.

Avoid overbaking. The cookies will continue to firm up as they cool.

Let them cool on the baking sheets for several minutes, then transfer them to a wire rack to cool completely.

Step 6: Make the Marshmallow Cream Filling

In a large bowl, beat the softened butter and powdered sugar until smooth and creamy.

Add the marshmallow fluff and vanilla extract.

Beat on medium-high speed for approximately 2 minutes, until the filling becomes light and fluffy.

If the filling seems too soft to pipe, refrigerate it briefly until it firms up.

Step 7: Assemble the Oatmeal Cream Pies

Turn half the cooled oatmeal cookies upside down.

Pipe or spread a generous layer of marshmallow filling onto the flat side of each cookie.

Place another cookie on top, flat side down, and press gently until the filling reaches near the edges.

Repeat with the remaining cookies.

For the best texture, let the assembled cream pies rest for 15–20 minutes before serving.

Tips for Perfect Soft and Chewy Oatmeal Cream Pies

Don’t overbake the cookies. They should look slightly soft in the center when you remove them from the oven.

Use quick oats. Their smaller texture helps the cookies hold together while remaining soft.

Measure flour carefully. Too much flour can make the cookies dry and thick. Spoon flour into your measuring cup and level it off.

Cool completely before filling. Warm cookies will melt the marshmallow buttercream.

Match cookies by size. Pairing similarly sized cookies creates neat, bakery-style sandwiches.

Chill the filling if needed. A short rest in the refrigerator makes soft filling easier to spread or pipe.

How to Store Oatmeal Cream Pies

Because the filling contains butter, proper storage helps maintain the best texture.

Refrigerator: Store assembled oatmeal cream pies in an airtight container in the refrigerator for up to 5 days. Allow them to sit at room temperature for 10–15 minutes before serving.

Freezer: Wrap each cream pie individually in plastic wrap, then place them in a freezer-safe container. Freeze for up to 2 months.

Make ahead: Bake the cookies a day in advance and store them in an airtight container. Prepare the filling and assemble when ready to serve.

Frequently Asked Questions

Can I Use Old-Fashioned Oats Instead of Quick Oats?

Yes, but the cookies will have a heartier, rougher texture. For the softest, most classic oatmeal cream pies, quick oats work best.

Why Did My Oatmeal Cookies Spread Too Much?

Your butter may have been too warm, or the dough may have been too soft.

If your kitchen is warm, refrigerate the dough for 20–30 minutes before baking.

Can I Make the Filling Without Marshmallow Fluff?

You can substitute a traditional vanilla buttercream, but the texture and flavor will be different from classic oatmeal cream pies.

How Do I Keep the Cookies Soft?

Avoid overbaking, use the correct amount of flour, and store the assembled cookies in an airtight container.

Can I Make Smaller Oatmeal Cream Pies?

Absolutely! Use a smaller cookie scoop and begin checking for doneness a few minutes earlier. Smaller cookies are perfect for parties and lunchboxes.

A Homemade Treat Worth Remembering

There’s a reason oatmeal cream pies have remained a childhood favorite for generations.

The combination of chewy oatmeal cookies, warm spices, and fluffy marshmallow filling is simple, comforting, and completely irresistible.

These homemade oatmeal cream pies are perfect for sharing with family, bringing to a gathering, or enjoying with a cold glass of milk.

Did you grow up eating oatmeal cream pies? Let me know in the comments if you remember these sweet little sandwich cookies from childhood!