Sourdough Pumpkin Sugar Cookies with Creamy Buttercream

Introduction

Soft, warmly spiced, and irresistibly buttery, Sourdough Pumpkin Sugar Cookies with Creamy Buttercream bring all the cozy flavors of fall into one delightful cookie. Pumpkin puree keeps the centers tender, while sourdough discard adds a subtle tang that balances the sweetness. Each cookie gets a generous swirl of smooth buttercream for a bakery-style finish without complicated techniques. They are perfect for fall baking, Halloween parties, Thanksgiving dessert tables, or a quiet afternoon with coffee. You’ll learn how to make these cookies tender, flavorful, beautifully spiced, and easy to decorate.

Why You’ll Love This Recipe

There is so much to love about Sourdough Pumpkin Sugar Cookies with Creamy Buttercream. First, the texture hits the perfect balance: the edges have a delicate softness while the centers stay plush and tender. The creamy frosting adds a silky contrast that makes every bite feel extra indulgent.

The pumpkin brings natural moisture and gentle sweetness, while sourdough discard contributes a subtle tang that keeps the cookies from tasting overly sweet. Warm cinnamon, ginger, and nutmeg create the familiar flavor of autumn without overpowering the pumpkin.

These cookies also make an excellent way to use extra sourdough discard. You do not need to maintain a special dough overnight, so you can mix, bake, cool, and decorate them in one afternoon. The buttercream comes together quickly, too.

For holidays, bake them as simple rounds or decorate them with seasonal sprinkles, cinnamon, or tiny pumpkin candies. They look festive with very little effort.

Ingredients

For the cookies:

2 1/4 cups (281 g) all-purpose flour
1 teaspoon baking powder
1/2 teaspoon baking soda
1/2 teaspoon fine salt
1 1/2 teaspoons ground cinnamon
1/2 teaspoon ground ginger
1/4 teaspoon ground nutmeg
1/2 cup (113 g) unsalted butter, softened
3/4 cup (150 g) granulated sugar
1/2 cup (120 g) pumpkin puree
1/2 cup (120 g) sourdough discard, 100% hydration
1 large egg (about 50 g), room temperature
2 teaspoons (10 ml) vanilla extract

For the buttercream:

1/2 cup (113 g) unsalted butter, softened
2 cups (240 g) powdered sugar
1 teaspoon vanilla extract
1–2 tablespoons (15–30 ml) heavy cream or milk
Pinch of salt

Use pure pumpkin puree rather than pumpkin pie filling. The sourdough discard should be unfed or recently fed discard with a mild aroma for the best flavor.

Pro Tips

1. Measure the flour carefully. Too much flour can make pumpkin cookies dense and dry. Spoon the flour into your measuring cup and level it, or use a kitchen scale for the most reliable result.

2. Do not overmix the dough. Once you add the dry ingredients, mix only until you no longer see streaks of flour. Overmixing can develop too much gluten and make the cookies less tender. This is especially important with sourdough discard.

3. Cool completely before frosting. Freshly baked cookies remain soft and fragile while warm. Let them cool on the baking sheet for several minutes, then transfer them to a rack. Frosting warm cookies can cause the buttercream to melt and slide.

For beautifully shaped cookies, use a cookie scoop to portion equal amounts of dough. If the dough feels especially soft, refrigerate it for 15–20 minutes before scooping. This makes handling easier and helps the cookies bake evenly.

Step-by-Step Instructions

Step 1: Prepare the oven and baking sheets.
Preheat your oven to 350°F (175°C). Line two baking sheets with parchment paper or silicone baking mats. This prevents sticking and makes cleanup much easier.

Step 2: Combine the dry ingredients.
Whisk together the flour, baking powder, baking soda, salt, cinnamon, ginger, and nutmeg in a medium bowl. Breaking up any spice clumps now helps distribute the warm flavors evenly throughout the dough.

Step 3: Cream the butter and sugar.
Add the softened butter and granulated sugar to a large mixing bowl. Beat for about 2–3 minutes until the mixture looks lighter and creamy. This step helps create a soft cookie texture.

Step 4: Add the wet ingredients.
Beat in the pumpkin puree, sourdough discard, egg, and vanilla. The mixture may look slightly loose or curdled at this point. That is completely normal.

Step 5: Bring the dough together.
Gradually add the dry ingredients to the wet mixture. Mix on low speed or stir gently until just combined. Stop as soon as the flour disappears. Avoid adding extra flour unless the dough seems unusually wet.

Step 6: Portion the cookies.
Scoop the dough into rounded portions, using about 1 1/2 tablespoons of dough per cookie. Place them about 2 inches apart on the prepared baking sheets. Gently flatten the tops with your fingers or the back of a spoon.

Step 7: Bake.
Bake for 10–13 minutes, rotating the pan halfway through if your oven has hot spots. The cookies should look set around the edges while the centers remain soft. Do not wait for them to become deeply golden.

Step 8: Cool.
Let the cookies rest on the baking sheet for 5 minutes. Move them to a wire rack and cool completely before decorating.

Step 9: Make the buttercream.
Beat the softened butter until smooth and creamy. Gradually add powdered sugar, then mix in vanilla and a pinch of salt. Add heavy cream or milk a little at a time until the frosting becomes light, fluffy, and easy to spread.

Step 10: Frost and decorate.
Spread or pipe buttercream over each cooled cookie. Finish with a dusting of cinnamon, fall sprinkles, or finely chopped pecans if desired. Serve immediately or chill briefly to firm the frosting.

Variations

For a maple version, replace half of the vanilla extract in the buttercream with 1 teaspoon of pure maple extract or add 1 tablespoon of maple syrup while reducing the milk slightly.

For a cream cheese finish, replace the buttercream with a simple cream cheese frosting made from softened cream cheese, butter, powdered sugar, and vanilla. The tangy frosting pairs especially well with pumpkin.

For dairy-free cookies, use a plant-based butter designed for baking and choose a dairy-free milk for the frosting. If your sourdough starter contains regular dairy ingredients, use a compatible starter instead.

You can also add 1/2 cup (60 g) of finely chopped toasted pecans or mini white chocolate chips for extra texture.

Storage and Serving

Store Sourdough Pumpkin Sugar Cookies with Creamy Buttercream in an airtight container at room temperature for up to 2 days if your kitchen stays cool. Because the buttercream contains dairy, refrigerate the cookies if you need to keep them longer. They will stay fresh in the refrigerator for about 4–5 days.

For the best texture, let refrigerated cookies sit at room temperature for 15–20 minutes before serving. This softens the buttercream and brings out the pumpkin flavor.

Serve them alongside hot coffee, chai tea, or apple cider. They also make a charming addition to Halloween dessert trays, Thanksgiving cookie platters, school bake sales, and autumn brunches. For parties, arrange them on a wooden board with cinnamon sticks and small pumpkins for an easy seasonal display.

FAQs

Can I use active sourdough starter instead of discard?
Yes. Active starter works well, although discard provides a milder flavor and fits this quick cookie recipe nicely.

Why are my pumpkin cookies soft?
Pumpkin adds significant moisture, so these cookies naturally have a soft texture. Avoid overbaking them, as excessive baking can dry the edges before the centers finish setting.

Can I make the dough ahead of time?
Yes. Cover the dough and refrigerate it for up to 24 hours. Let it sit for several minutes if it becomes too firm to scoop easily.

Can I freeze these cookies?
Yes. Freeze unfrosted cookies in an airtight container for up to 2 months. Thaw them at room temperature, then add fresh buttercream before serving.

Can I use homemade pumpkin puree?
Absolutely. Make sure your puree is thick rather than watery. If it contains excess moisture, drain it slightly before measuring so the cookie dough keeps the right consistency.

This Sourdough Pumpkin Sugar Cookies with Creamy Buttercream is comfort food at its finest — soft, warmly spiced, pumpkin-rich, and finished with a cloud of creamy frosting. It’s the kind of dish that makes ordinary fall afternoons feel special and gives holiday cookie trays a homemade touch. The gentle tang from sourdough discard adds extra character, while pumpkin keeps every bite tender and satisfying. Whether you bake them for a party, a family gathering, or simply because you have sourdough discard waiting in the refrigerator, these cookies deliver cozy autumn flavor in every bite.