This Pumpkin Casserole with Toasted Marshmallow is sweet, creamy, and topped with a golden layer of marshmallows that melts right into the pumpkin filling.

It’s an easy fall side dish or dessert for Thanksgiving, holiday dinners, potlucks, and family gatherings.

Pumpkin Casserole With Toasted Marshmallows

I like this pumpkin casserole because it uses simple ingredients and can be prepared ahead, then baked when you’re ready to serve. The soft pumpkin filling and toasted marshmallow topping give it that classic holiday flavor without making the recipe complicated.

Serve it warm straight from the baking dish alongside Thanksgiving dinner, or add it to a fall dessert table with pies, cakes, and other pumpkin recipes.

If you like classic, holiday-table pumpkin dishes like this one, these are worth trying too:

Pumpkin Casserole with Toasted Marshmallow

Ingredients You’ll Need

Pure canned pumpkin gives you full control over the sweetness here, unlike pie filling which comes pre-sweetened.

Adding the marshmallows only after the base is fully baked keeps them from melting into the casserole instead of toasting on top.

Ingredients

1 can (29 oz) pure pumpkin puree
3/4 cup packed brown sugar
1/2 cup heavy cream
3 large eggs
1 tsp pumpkin pie spice
1/2 tsp salt
1/3 cup unsalted butter, melted
3 cups mini marshmallows

Directions

Preheat your oven to 350°F and grease a 9×13-inch baking dish.
In a large bowl, whisk together the pumpkin puree, brown sugar, heavy cream, eggs, pumpkin pie spice, and salt until smooth.
Whisk in the melted butter.
Pour the mixture into the prepared baking dish, spreading it into an even layer.
Bake for 35 to 40 minutes, until the center is set and no longer jiggly.
A knife inserted near the center should come out mostly clean when it’s done.
Remove the casserole from the oven and switch it to broil.
Scatter the mini marshmallows evenly over the top of the baked pumpkin base.
This one takes a bit of watching once the marshmallows go under the broiler, just so you know, since they can go from golden to burnt quickly.
Broil for 1 to 2 minutes, watching closely, until the marshmallows are puffed and golden brown on top.
Check every 20 to 30 seconds once they start browning to avoid burning them.
Remove from the oven as soon as they reach the color you want.
Let the casserole cool for 5 minutes before serving.
This short rest lets the marshmallows firm up slightly so they hold their shape when scooped.
Serve warm and enjoy!

Important Recipe Notes

Add the marshmallows only after the base is fully baked. Adding them earlier means they melt completely into the pumpkin instead of toasting on top with that classic golden, gooey texture.
Watch the broiler closely. Marshmallows go from perfectly toasted to burnt in a matter of seconds under a broiler, so don’t walk away during this step.

Use pure pumpkin puree, not pie filling. Pie filling comes pre-sweetened and spiced, which will make this casserole too sweet.
Let the casserole rest briefly before serving. This helps the marshmallow topping firm up just enough to hold its shape when scooped onto plates.
Store leftovers in an airtight container in the fridge for up to 3 days. The marshmallow topping won’t stay as toasted after storing, but the flavor holds up fine.
This doesn’t freeze well because of the marshmallow topping, which changes texture significantly after thawing.

How to Serve, Store & Customize This Recipe

Serving:

Serve warm, straight from the baking dish, as a holiday side or a lighter dessert alternative to pie. This pairs well with a Thanksgiving spread alongside turkey and other classic sides.

Storage:

Keep leftovers in an airtight container in the fridge for up to 3 days. The marshmallow topping softens as it sits, though a quick pass under the broiler can help re-crisp it slightly.

Customization:

Add a layer of chopped pecans under the marshmallows for extra crunch, or swap the mini marshmallows for large ones sliced in half for bigger toasted pieces. A pinch of ground ginger alongside the pumpkin pie spice adds a little extra warmth.