Sweet Potato Marshmallow Tart 🍰 – Break the Dessert Routine with This Creative Thanksgiving Treat
This unexpected Thanksgiving dessert blends roasted sweet potatoes with toasted marshmallows for a wholesome, crowd-pleasing twist on traditional pie.
Ditch the pumpkin pie this year! Our Sweet Potato Marshmallow Tart reinvents classic Thanksgiving flavors with a modern, healthy spin. The nutty, naturally sweet roasted sweet potato base is spiced with warming cinnamon and ginger, while the toasted marshmallow topping gets a golden, caramelized finish under the broiler. Served in a wholesome oat flour crust, this tart is both comforting and surprising - perfect for guests who crave something new yet familiar.
This dessert is ideal for hosts looking to impress without hours of work. The crust comes together in minutes, the filling uses pantry staples, and the marshmallow topping adds a showstopping finish that'll spark conversation at your Thanksgiving table.
The oat flour crust is naturally gluten-free and nutty, providing a sturdy base for the creamy sweet potato filling. We've balanced the earthy sweetness of the roasted sweet potatoes with aromatic spices, then crowned it with a toasted marshmallow layer that's lightly browned for a perfect contrast of textures.
Whether you're a dessert innovator or just looking to mix up your Thanksgiving menu, this tart delivers all the cozy, autumnal flavors you love with a creative twist that'll have everyone asking for the recipe.
Pin it now for a dessert that's sure to become a new holiday favorite!
Why This Recipe Works
⏰ Quick Prep
The crust and filling come together in 30 minutes with minimal effort - perfect for busy holiday cooks.
💰 Cost-Effective
Uses affordable pantry staples like oat flour, canned sweet potatoes, and store-bought marshmallows.
👥 Showstopping Presentation
The golden marshmallow topping and rustic tart shape make it a holiday table centerpiece.
🌟 Healthy Twist
Oat flour crust adds fiber, while sweet potatoes provide natural sweetness and beta-carotene.
🎯 Customizable
Easily adapt for dietary needs with gluten-free, vegan, or nut-free variations.
Sweet Potato Marshmallow Tart Recipe
A modern twist on classic Thanksgiving flavors
🛒 Ingredients
- - 1 ½ cups oat flour
- - ½ cup rolled oats
- - ¼ cup coconut oil, chilled
- - ¼ cup honey
- - 1 large sweet potato, roasted and mashed
- - 2 large eggs
- - 1 cup whole milk
- - 1 tsp ground cinnamon
- - ½ tsp ground ginger
- - ¼ tsp salt
- - 1 cup mini marshmallows
👨🍳 Instructions
Prepare Crust: Combine oat flour, rolled oats, coconut oil, and honey in a bowl until crumbly. Press into a tart pan.
💡 Chill crust for 15 minutes before baking to prevent spreading.
Bake Crust: Bake at 375°F (190°C) for 15 minutes. Let cool slightly.
💡 Pre-bake crust to ensure it holds the filling.
Make Filling: Whisk mashed sweet potato, eggs, milk, cinnamon, ginger, and salt until smooth.
💡 Use roasted sweet potato for enhanced flavor - see ingredient notes for oven instructions.
Bake Filling: Pour into crust. Bake 25-30 minutes until golden. Cool completely.
💡 Cool tart in refrigerator for 1 hour for cleaner slices.
Top with Marshmallows: Spread marshmallows over cooled tart. Broil 3-4 minutes until golden.
💡 Watch closely to prevent burning - distance from broiler varies by oven.
Nutrition (per serving):
Ingredient Notes & Substitutions
Oat Flour
Provides a nutty, gluten-free base with good texture. Use store-bought or homemade (blended rolled oats).
Substitutions: Almond flour for richer flavor, all-purpose flour for traditional texture.
Sweet Potato
Roasting enhances natural sweetness. Use 2 medium potatoes, peeled, cube, and roast at 400°F (200°C) for 25 minutes.
Substitutions: Butternut squash for similar texture, pumpkin puree for softer flavor.
Marshmallows
Create a classic toasted topping. Use mini marshmallows for even browning.
Substitutions: Vegan marshmallows, meringue for dairy-free version.
Coconut Oil
Adds moisture and subtle coconut flavor. Use any neutral oil like canola or vegetable.
Substitutions: Butter for richer flavor, vegan butter for dairy-free option.
Pro Tips for Perfect Sweet Potato Marshmallow Tart
🍞 Crust Perfection
Chill crust dough 15 minutes before pressing into tart pan to prevent spreading during baking.
🍠 Sweet Potato Secrets
Roast sweet potato cubes at 400°F (200°C) until tender - test with a fork before mashing.
🔥 Marshmallow Magic
Broil marshmallows 4-6 inches from heat source for even browning. Rotate tart halfway through.
❄️ Storage Tips
Store in airtight container in fridge for up to 3 days. Marshmallows may soften over time.
Variations & Customizations
Spiced Marshmallow Layer
Mix 2 tbsp cinnamon and 1 tbsp brown sugar with marshmallows before toasting for extra flavor.
Nutty Crunch
Sprinkle chopped pecans or walnuts over crust before adding filling for added texture.
Gingersnap Crust
Replace oat flour with crushed gingersnaps and 3 tbsp melted butter for a spiced base.
Maple Drizzle
Finish with a light maple glaze made from ¼ cup powdered sugar and 1-2 tsp maple syrup.
Serving Suggestions & Pairings
🍽️ Best Served With:
- Roasted turkey with herb stuffing - the tart's spices complement savory turkey
- Green salad with apple-cranberry vinaigrette - balances richness with acidity
- Buttered pumpkin bread - creates a cohesive autumn flavor profile
🍷 Drink Pairings:
Pair with spiced chai tea for warm spices or a sweet Riesling to match the tart's sweetness.
Make-Ahead Instructions & Storage
Make-Ahead Tips
Prepare crust and filling 1 day ahead. Assemble and add marshmallows just before serving.
Refrigerator Storage
Store in airtight container for up to 3 days. Marshmallows may soften but tart remains delicious.
Freezer Storage
Wrap cooled tart tightly in plastic wrap and freeze for up to 2 months. Thaw in refrigerator overnight.
Reheating Instructions
Reheat at 350°F (175°C) for 10-15 minutes. Best enjoyed at room temperature.
Troubleshooting & Common Questions
Q: Why is my crust soggy?
A: Under-baked crust or over-moist filling. Pre-bake crust for full 15 minutes and ensure filling is cooled before assembling.
Q: Can I use store-bought sweet potato casserole?
A: Yes, use 2 cups cooked sweet potato mixture. Add 1-2 tbsp flour to thicken if needed.
Q: My marshmallows burned too quickly!
A: Move tart farther from broiler or use a lower oven setting. Check every minute for golden color.
Q: How to prevent a cracked filling?
A: Cool tart completely before adding marshmallows. Avoid over-mixing filling ingredients.
Final Thoughts
This Sweet Potato Marshmallow Tart is the perfect way to elevate your Thanksgiving dessert table with a creative, yet comforting, twist on classic flavors. The combination of roasted sweet potatoes, spiced filling, and toasted marshmallows creates a dessert that's both familiar and excitingly new.
Whether you're a dessert innovator or just looking to mix up your holiday menu, this tart delivers all the cozy, autumnal flavors you love with a showstopping presentation. The wholesome oat flour crust adds a healthy touch, while the caramelized marshmallow topping guarantees oohs and aahs from your guests.
