Sweet Potato Casserole Topping (Print Version)

Creamy mashed sweet potatoes topped with toasted marshmallows or crunchy pecan streusel.

# What You Need:

→ Sweet Potato Base

01 - 3.3 lbs peeled and cubed sweet potatoes
02 - 4 tbsp unsalted butter, softened
03 - 1/3 cup plus 1 tbsp whole milk
04 - 1/3 cup light brown sugar
05 - 2 large eggs
06 - 1 tsp vanilla extract
07 - 1/2 tsp ground cinnamon
08 - 1/4 tsp ground nutmeg
09 - 1/2 tsp salt

→ Topping Options

10 - 1 cup mini marshmallows
11 - 2/3 cup pecan halves or pieces
12 - 1/4 cup light brown sugar
13 - 2 tbsp all-purpose flour
14 - 2 tbsp unsalted butter, melted

# Directions:

01 - Preheat oven to 350°F. Grease a 2-quart baking dish.
02 - Place sweet potatoes in a large pot, cover with water, bring to a boil, and simmer 15 to 20 minutes until tender. Drain thoroughly.
03 - Mash sweet potatoes until smooth. Stir in butter, milk, brown sugar, eggs, vanilla extract, cinnamon, nutmeg, and salt until fully incorporated and creamy.
04 - Transfer the sweet potato mixture to the prepared baking dish and smooth the surface.
05 - Evenly scatter mini marshmallows over the sweet potato layer if using marshmallows.
06 - Combine pecans, brown sugar, flour, and melted butter until crumbly. Sprinkle this streusel evenly over the sweet potatoes if choosing pecan topping.
07 - Bake uncovered for 25 to 30 minutes until topping is golden and the dish is heated through. If using marshmallows, bake until puffed and golden, monitoring closely.
08 - Allow to cool for 5 to 10 minutes before serving.

# Expert Suggestions:

01 -
  • It comes together faster than you'd expect, giving you more time to enjoy your guests instead of being stuck in the kitchen.
  • The marshmallow topping gets this magical golden-brown crust while staying pillowy inside, which somehow feels like a small triumph every single time.
  • You can make it ahead and just pop it in the oven before serving, which means one less thing to juggle on a busy day.
02 -
  • Drain those sweet potatoes really well after boiling—I learned this the hard way by watching my casserole turn into soup because I was lazy about it.
  • Don't overmix once the eggs are in, or you'll end up with a dense, gluey texture instead of that light, custardy consistency that makes people come back for more.
  • If using marshmallows, keep the oven door cracked or watch through the window in those final minutes—they go from perfect to burnt in about 30 seconds flat.
03 -
  • Room-temperature ingredients mix together more smoothly—take your eggs and butter out of the fridge about 20 minutes before you start, and you'll notice the difference immediately.
  • If you accidentally overbake and the marshmallows are charred, don't panic; they'll still taste delicious, just a little more caramelized and intense.
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