Irresistible Sweet Potato Cookies with Marshmallows

If you ask me, sweet potato cookies are pure comfort in cookie form.

These soft-baked treats combine the natural sweetness of roasted sweet potatoes with fluffy marshmallows for a cookie that tastes like fall in every bite. The sweet potato adds moisture and a subtle earthy flavor that pairs perfectly with warm spices.

They’re topped with mini marshmallows that get golden and slightly melted in the oven. A hint of cinnamon and vanilla brings everything together for a cookie that’s part dessert, part nostalgic treat.

It’s the kind of recipe that makes your kitchen smell amazing and disappears from the cookie jar in no time.

What Kind of Sweet Potato Should I Use?

For these cookies, you’ll want to use orange-fleshed sweet potatoes, which are the most common variety you’ll find at the grocery store. These have that classic sweet, creamy texture that works perfectly in baked goods. You can use either the darker-skinned varieties like Beauregard or the lighter-skinned ones – both will give you great results. Make sure your sweet potatoes are firm and free of soft spots when you’re shopping, and don’t worry if they’re a bit dirty since you’ll be peeling them anyway. If you only have access to the white-fleshed sweet potatoes, they’ll work too, though your cookies might be a little less sweet and have a slightly different color.

Options for Substitutions

These cookies are pretty forgiving when it comes to swaps, so here are some options if you need to make changes:

• Sweet potato: You can use canned sweet potato puree instead of fresh – just use about 1 cup of puree and skip the water. Butternut squash or pumpkin puree work too, though they’ll give a slightly different flavor.
• Dark molasses: If you don’t have molasses, you can substitute with maple syrup or additional honey. The cookies will be a bit sweeter and less rich, but still tasty.
• Brown sugar: White sugar works in a pinch, but add an extra tablespoon of molasses or honey to keep that deep flavor. You can also use coconut sugar for a slightly different taste.
• Butter: For dairy-free cookies, use vegan butter or coconut oil (solid, not melted). The texture might be slightly different but they’ll still turn out great.
• Marshmallows: Mini marshmallows work too – just use about 3-4 per cookie. You can also skip them entirely or try a drizzle of maple glaze instead.
• Pecans: Walnuts, chopped almonds, or even pumpkin seeds make good alternatives. Or leave them off completely if you prefer plain cookies.

Watch Out for These Mistakes While Baking

The biggest mistake when making sweet potato cookies is not cooking the sweet potatoes long enough – they need to be completely tender and mashable, otherwise you’ll end up with lumpy cookies that don’t hold together well.

Make sure your sweet potato puree is completely cool before mixing it into the butter and sugar, as warm sweet potatoes can melt the butter and create a greasy dough that won’t bake properly.

Don’t skip chilling the dough for at least 30 minutes before baking, since this helps the cookies keep their shape and prevents them from spreading too much in the oven.

When adding the marshmallows, press them gently into the cookie dough just before baking rather than mixing them in, and keep an eye on them during the last few minutes of baking to prevent burning – they should be golden brown, not charred.

What to Serve With Sweet Potato Cookies?

These sweet potato cookies are perfect on their own, but they really shine when paired with a tall glass of cold milk or a warm cup of coffee. The marshmallow and pecan toppings make them feel like a cozy fall dessert, so they’re great alongside other autumn treats like apple cider or hot chocolate. I love serving them at holiday gatherings with a cheese board featuring sharp cheddar and crackers – the sweet and savory combo is surprisingly good. For a fun dessert spread, try them with vanilla ice cream or even crumbled over a bowl of cinnamon oatmeal for breakfast the next morning.

Storage Instructions

Store: These sweet potato cookies stay soft and chewy when kept in an airtight container at room temperature for up to a week. Just make sure they’re completely cooled before storing, and maybe toss in a slice of bread to keep them extra moist if you want.

Freeze: You can freeze these cookies for up to 3 months in a freezer-safe container with parchment paper between layers. The marshmallows might get a little different in texture after freezing, but they still taste great! I like to freeze some dough balls too – just add a couple extra minutes to the baking time.

Enjoy: These cookies are delicious straight from the container at room temperature, or you can warm them up in the microwave for about 10-15 seconds to get that fresh-baked feel again. The marshmallows get all gooey and the spices really come alive when they’re slightly warm.

Preparation Time	30-45 minutes
Cooking Time	10-12 minutes
Total Time	40-57 minutes
Level of Difficulty	Medium

Estimated Nutrition

Estimated nutrition for the whole recipe (without optional ingredients):

• Calories: 4200-4500
• Protein: 40-48 g
• Fat: 130-145 g
• Carbohydrates: 730-780 g

Ingredients

For the dough:

• 1/4 cup warmed honey
• 1 cup unsalted butter, softened (I use Kerrygold for best flavor)
• 1/4 tsp ground cloves
• 1 tsp baking soda
• 1 tsp vanilla extract
• 1/2 tsp ground nutmeg
• 1 tbsp sea salt
• 2 tbsp fresh lemon juice (freshly squeezed for best flavor)
• 1/4 cup warmed dark molasses (melted and cooled slightly)
• 1 cup packed brown sugar
• 3 tbsp water
• 4 cups all-purpose flour (I use King Arthur)
• 1 large egg (room temperature)
• 2 cups peeled, cubed sweet potatoes (cut into 1/2-inch pieces)
• 1 tbsp ground cinnamon (freshly ground preferred)

For the topping:

• 24 whole pecans, salted (optional but adds nice contrast)
• 24 regular marshmallows (gives a gooey, melted center)

Step 1: Cook and Prepare Sweet Potatoes

• 2 cups peeled, cubed sweet potatoes
• 3 tbsp water

Cut the peeled sweet potatoes into 1/2-inch cubes and place them in a microwave-safe bowl with the water.

Microwave on high for 5-6 minutes, stirring halfway through, until the potatoes are very soft and easily pierced with a fork.

The sweet potatoes should be completely cooked through so they blend smoothly into the dough and won’t create lumps.

Step 2: Build the Wet Ingredient Base

• cooked sweet potatoes from Step 1
• 1 cup unsalted butter, softened
• 1/4 cup warmed dark molasses
• 1/4 cup warmed honey
• 2 tbsp fresh lemon juice

Add the softened butter directly to the warm sweet potatoes while they’re still in the bowl and mix vigorously until the butter is completely incorporated and the mixture is smooth.

This creates an emulsion that will help the dough develop a tender crumb.

In a separate small bowl, gently whisk together the molasses, honey, and lemon juice until combined—I find that doing this separately prevents overmixing the main dough later.

Step 3: Combine Dry Spices and Mix Wet Ingredients

• sweet potato-butter mixture from Step 2
• 1 tbsp sea salt
• 1 tbsp ground cinnamon
• 1/2 tsp ground nutmeg
• 1/4 tsp ground cloves
• 1 tsp baking soda
• 1 tsp vanilla extract
• 1 large egg, room temperature
• molasses-honey-lemon mixture from Step 2

In a small bowl, whisk together the sea salt, cinnamon, nutmeg, cloves, and baking soda.

This ensures the spices and leavening agent are evenly distributed throughout the dough.

Add the molasses-honey-lemon mixture to the sweet potato-butter base, then add the vanilla extract and room temperature egg.

Mix well until everything is thoroughly combined, then add the spice mixture and fold it in until no streaks remain.

Step 4: Add Flour and Chill Dough

• wet ingredient mixture from Step 3
• 4 cups all-purpose flour

Add the flour one cup at a time, mixing gently after each addition until just combined.

Stop as soon as no dry flour streaks remain—overmixing at this stage will make the cookies tough.

Form the dough into a rough ball, cover with plastic wrap, and refrigerate for at least 1 hour.

The chill time allows the flavors to meld and makes the dough easier to handle when portioning into cookies.

Step 5: Shape and Pre-Bake Cookie Bases

• chilled dough from Step 4

Preheat your oven to 350°F.

Working with chilled dough, roll it into 1-inch balls and place them on parchment-lined baking sheets, spacing them about 2 inches apart.

Gently flatten each ball to about 1/2 inch thick using the bottom of a measuring cup or your palm.

Bake for 5-6 minutes until the edges are just set but the centers are still slightly soft—the cookies should not be fully baked at this stage since they’ll return to the oven with marshmallows.

Step 6: Top with Marshmallows and Finish Baking

• pre-baked cookies from Step 5
• 24 regular marshmallows

Remove the cookies from the oven and immediately place one marshmallow on the center of each warm cookie, pressing it down gently so it adheres.

Return the baking sheet to the oven and bake for 5-6 minutes more, until the marshmallows are puffed and golden on top with a slight caramelization.

Watch carefully during this final bake as marshmallows can go from perfectly toasted to burnt quickly.

Step 7: Garnish and Serve

• baked cookies from Step 6
• 24 whole pecans, salted

Remove the cookies from the oven and, while the marshmallows are still warm and tacky, press one salted pecan gently onto the center of each marshmallow.

Let the cookies cool on the baking sheet for 2-3 minutes so the marshmallow sets slightly, then transfer to a cooling rack.

The pecans add a lovely salty contrast to the sweet and spiced cookie, and I find their slight bitterness really completes the flavor profile.