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Preheat your oven to 350°F (175°C). Line several baking sheets with parchment paper.

In a medium bowl, whisk together the all-purpose flour, baking soda, ground cinnamon, ground nutmeg, and salt. Set aside.

In a large bowl or the bowl of a stand mixer, beat the softened unsalted butter with an electric mixer until creamy. Add the granulated sugar and packed light brown sugar. Beat until the mixture is light and fluffy.

Beat in the large egg, pumpkin puree, and vanilla extract until well combined.

Gradually add the dry ingredients mixture to the wet ingredients, mixing until just combined. Be careful not to overmix.

Stir in the old-fashioned rolled oats until evenly distributed.

Scoop rounded tablespoons of dough onto the prepared baking sheets, leaving some space between cookies. You should get approximately 24-28 cookies, enough for 12-14 sandwich pies.

Bake in the preheated oven for 9 to 11 minutes, or until the edges are lightly golden and the centers are set. Bake in batches if necessary.

Let the cookies cool on the baking sheet for a few minutes before transferring them to a wire rack to cool completely. This cooling process is crucial before assembling.

While the cookies cool, prepare the vanilla buttercream. In a large bowl or the bowl of a stand mixer, beat the softened unsalted butter with an electric mixer until light and fluffy.

Gradually add 2 to 3 cups of powdered sugar, 1 teaspoon of vanilla extract, and 1 to 2 tablespoons of milk. Start with 1 tablespoon of milk and add more if needed to reach a smooth, fluffy consistency.

Beat on high speed until the buttercream is smooth and fluffy.

Once the cookies are completely cool, pipe or spread a generous amount of vanilla buttercream onto the flat side of one pumpkin oatmeal cookie.

Gently place another cookie on top, flat side down, to create a sandwich. Repeat with the remaining cookies and buttercream.

For the optional vanilla pumpkin sauce: In a small saucepan, combine the pumpkin puree, light brown sugar, vanilla extract, and milk.

Simmer over medium heat, stirring occasionally, until the sauce thickens to a drizzling consistency, about 5-7 minutes.

Drizzle the warm vanilla pumpkin sauce over the assembled pumpkin oatmeal cream pies for an extra touch, if desired.


Preheat your oven to 350°F (175°C). Line several baking sheets with parchment paper.

In a medium bowl, whisk together the all-purpose flour, baking soda, ground cinnamon, ground nutmeg, and salt. Set aside.

In a large bowl or the bowl of a stand mixer, beat the softened unsalted butter with an electric mixer until creamy. Add the granulated sugar and packed light brown sugar. Beat until the mixture is light and fluffy.

Beat in the large egg, pumpkin puree, and vanilla extract until well combined.

Gradually add the dry ingredients mixture to the wet ingredients, mixing until just combined. Be careful not to overmix.

Stir in the old-fashioned rolled oats until evenly distributed.

Scoop rounded tablespoons of dough onto the prepared baking sheets, leaving some space between cookies. You should get approximately 24-28 cookies, enough for 12-14 sandwich pies.

Bake in the preheated oven for 9 to 11 minutes, or until the edges are lightly golden and the centers are set. Bake in batches if necessary.

Let the cookies cool on the baking sheet for a few minutes before transferring them to a wire rack to cool completely. This cooling process is crucial before assembling.

While the cookies cool, prepare the vanilla buttercream. In a large bowl or the bowl of a stand mixer, beat the softened unsalted butter with an electric mixer until light and fluffy.

Gradually add 2 to 3 cups of powdered sugar, 1 teaspoon of vanilla extract, and 1 to 2 tablespoons of milk. Start with 1 tablespoon of milk and add more if needed to reach a smooth, fluffy consistency.

Beat on high speed until the buttercream is smooth and fluffy.

Once the cookies are completely cool, pipe or spread a generous amount of vanilla buttercream onto the flat side of one pumpkin oatmeal cookie.

Gently place another cookie on top, flat side down, to create a sandwich. Repeat with the remaining cookies and buttercream.

For the optional vanilla pumpkin sauce: In a small saucepan, combine the pumpkin puree, light brown sugar, vanilla extract, and milk.

Simmer over medium heat, stirring occasionally, until the sauce thickens to a drizzling consistency, about 5-7 minutes.

Drizzle the warm vanilla pumpkin sauce over the assembled pumpkin oatmeal cream pies for an extra touch, if desired.
