Whipped sweet potato casserole topped with golden brown sugar streusel

Best Sweet Potato Casserole

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Created on October 29th, 2025 at 06:29 pm

Cozy Harvest Side with Sweet Potatoes

Sink into this warm, comforting sweet potato casserole—perfect for a fall table or Gratitude Gathering. Creamy mashed sweet potatoes meet a crisp brown‑sugar streusel topping for the ultimate season‑inspired side dish. Whether you’re serving family or prepping ahead, this dish hits all the notes: rich flavour, easy prep, and that golden colour that Pinterest loves.

Sweet potato mash with crispy streusel topping served in a baking dish

Why You’ll Love This Recipe

This casserole delivers heart‑warming comfort without fuss. The natural sweetness of the sweet potatoes pairs beautifully with the buttery, cinnamon‑spiced mash and crisp topping. It’s crowd‑friendly and ideal for a family‑style gathering or holiday‑side dish. Plus, you can prep ahead to save stress on the big day—so you’ll spend more time enjoying good company and less time in the kitchen.


⏱️ Time Breakdown

  • Prep Time: 15 minutes
  • Cook Time: 1 hour 30 minutes
  • Total Time: 1 hour 45 minutes
  • Servings: 10

📝 Ingredients List

  • 3 lbs (about 5‑6 medium) sweet potatoes
  • 6 Tbsp butter (melted)
  • ½ cup sugar
  • 2 large eggs
  • 2 tsp vanilla extract
  • 1 tsp cinnamon
  • 1 tsp salt (reduce to ½ tsp if using salted butter)
  • ¼ cup half‑and‑half

Brown Sugar Streusel Topping:

  • 3 Tbsp salted butter (softened)
  • 1 cup brown sugar
  • ⅓ cup flour

✨ Kitchen Tools You’ll Need

  • Large skillet or frying pan (if cooking sweet potatoes on stovetop)
  • Sharp knife
  • Cutting board
  • Measuring cups & spoons
  • Mixing bowls
  • Wooden spoon or spatula
  • 9 × 13‑inch baking dish (or slightly smaller)
  • Fork (for piercing sweet potatoes)

👩‍🍳 Step‑by‑Step Instructions

  1. Preheat oven to 400 °F (≈ 200 °C). Place the sweet potatoes on a baking sheet and pierce holes with a fork. Bake for about 50 minutes to 1 hour, depending on size, until easily pierced through.
  2. Once soft, cut the sweet potatoes in half and scoop out the flesh into a large mixing bowl. Add melted butter, sugar, eggs, vanilla, cinnamon, salt and half‑and‑half. Whip until creamy. 😊
  3. Transfer the mixture into the baking dish and spread evenly.
  4. Make the streusel topping: In a small bowl, mix softened butter, brown sugar and flour until coarse crumbs form. Sprinkle evenly over the sweet potato layer.
  5. Reduce oven to 350 °F (≈ 175 °C). Bake for 20‑25 minutes or until warm throughout and topping is cooked through (cover loosely with foil halfway if topping browns too fast).
  6. Serve warm or refrigerate for days ahead.

💡 Pro Tips

  • Make‑ahead friendly: You can prepare the mashed sweet potato filling up to 48 hours ahead; store in an airtight container. When ready, spread in dish, add topping and bake as directed.
  • Topping variation: For extra crunch, stir in 1 cup chopped pecans into the streusel.
  • Marshmallow option: If you love marshmallows, add 1 cup mini marshmallows on top during the last 10 minutes of baking. If adding marshmallows, reduce sugar in mashed sweet potatoes to ⅓ cup.
  • Storage & reheating: Cover and refrigerate leftovers up to 4‑5 days. Reheat in the microwave or oven until warmed through.

🎯 You’re Ready to Serve

This dish brings family and flavours together in one gorgeous side. The velvety sweet potatoes layered under a golden, buttery streusel are the kind of comforting yet elegant recipe that makes a gathering feel special. Whether it’s a fall celebration, holiday at home, or simply a cozy dinner, this casserole offers rich texture, warm sweetness and crave‑worthy appeal—and it’s easy to prep ahead so you’re present at the table instead of stuck in the kitchen.


📊 Nutrition Table

Serving SizeCaloriesProteinCarbsFatFiberSugar
1 plate370 kcal4 g63 g12 g4 g37 g

Disclaimer: Nutrition facts are estimated using online tools and may vary based on your ingredients and preparation. Please consult a nutritionist for precise dietary advice.

Silky mashed sweet potatoes under crispy brown sugar streusel

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