I love preparing my Best Sweet Potato Casserole during Thanksgiving because it combines the natural sweetness of mashed sweet potatoes with a perfect blend of granulated sugar, lightly beaten eggs, melted butter, milk, and a hint of vanilla. Topped with mini marshmallows, it brings delightful charm to any holiday table.

I recently tried making an Easy Sweet Potato Casserole that turned out to be a game changer for my fall gatherings. I started with 4 medium sweet potatoes, peeled and cubed – enough to make about 4 cups of mashed goodness.
I mixed in 1/2 cup granulated sugar, 2 lightly beaten eggs, 1/3 cup melted butter, and 1/2 cup milk with a hint of vanilla extract and a pinch of salt. Then, to add that special twist, I topped it off with 2 cups mini marshmallows that melt into a sweet crispy layer.
This recipe fits right in with some of the best Thanksgiving recipes side dishes I’ve ever tried, and it’s perfect for a unique twist on traditional Sweet Potato Thanksgiving dishes. Trust me, if you love experimenting in the kitchen, you definitely want to give this one a try even if it looks deceptively simple.
Why I Like this Recipe
1. I really love how easy it is to make this recipe, like when I’m in a rush but still wanna whip up something tasty for fall, it never fails to impress me.
2. I enjoy the way the mashed sweet potatoes and marshmallows blend together, giving me that unique mix of smooth and gooey textures that hits just right.
3. I appreciate that it’s a comforting dish that reminds me of family gatherings during Thanksgiving, making me feel all warm and fuzzy inside.
4. I like that it’s a perfect balance of sweet and buttery flavors, and even if it seems pretty simple, every bite is packed with flavors that make me smile.
Ingredients

- Sweet potatoes – They’re super rich in fibre and vitamins, giving the dish a natural sweetness and a healthy twist.
- Granulated sugar – It gives that burst of sweetness that makes the casserole fun and indulgent even though its not the healthiest.
- Eggs – They bring protein and help bind everything together, keeping the mixture smooth and firm.
- Butter – Provides richness and flavor while also adding moisture for a creamy texture.
- Milk – This adds creaminess and slight protein, merging all the flavors for a well balanced taste.
- Vanilla extract – Enhances the sweet flavor with its mellow taste.
- Salt – Just a pinch to bring out the flavors and balance the overall sweetness.
- Mini marshmallows – They top the dish with extra sweetness and a fun gooey texture when baked.
Ingredient Quantities
- 4 medium sweet potatoes, peeled and cubed (about 4 cups mashed)
- 1/2 cup granulated sugar
- 2 large eggs, lightly beaten
- 1/3 cup melted butter
- 1/2 cup milk
- 1 teaspoon vanilla extract
- A pinch of salt
- 2 cups mini marshmallows
How to Make this
1. Preheat your oven to 350°F and grease a casserole dish.
2. In a large pot, boil the cubed sweet potatoes until they’re tender (this usually takes about 20 minutes) then drain them.
3. Mash the cooked sweet potatoes until smooth, making sure you have about 4 cups.
4. In a large bowl, mix the mashed sweet potatoes with the granulated sugar, lightly beaten eggs, melted butter, milk, vanilla extract and a pinch of salt until well combined.
5. Pour the sweet potato mixture into the greased casserole dish and even it out with a spatula.
6. Evenly sprinkle the mini marshmallows over the top of the mixture.
7. Place the dish in the oven and bake for 25 to 30 minutes until the marshmallows are melted and lightly golden.
8. Remove the casserole from the oven and let it cool for a few minutes.
9. Serve warm and enjoy this delicious fall favorite with your family and friends.
Equipment Needed
1. Oven (preheated to 350°F)
2. Casserole dish (greased)
3. Large pot
4. Colander (for draining the sweet potatoes)
5. Potato masher
6. Large mixing bowl
7. Spatula
8. Measuring cups and spoons
These are the main items you’ll need to follow the recipe.
FAQ
Easy Sweet Potato Casserole Recipe Substitutions and Variations
- For granulated sugar, you could try using brown sugar or even a bit of honey. Just make sure you adjust the liquid in the recipe a bit if you use honey.
- If you dont have eggs on hand, 1/4 cup of unsweetened applesauce per egg or a flaxseed egg (1 tablespoon flaxseed meal mixed with 3 tablespoons water) works pretty well.
- Instead of melted butter, you can use coconut oil or margarine with a similar amount.
- No milk? Swap with almond milk or soy milk if you prefer a dairy-free option.
- If mini marshmallows arent available, topping with chopped pecans or walnuts can add a nice crunchy texture.
Pro Tips
Pro tip 1: Don’t over mash your sweet potatoes. Sometimes, keeping a few small lumps in there can add a nice texture and extra flavor that makes your dish more interesting.
Pro tip 2: Try adding a pinch of extra spices like cinnamon or nutmeg. It might sound small but it gives a warm, fall vibe that totally ups the flavor game.
Pro tip 3: While boiling your sweet potatoes, keep an eye on them. If they’re boiled too long, they end up a little watery and might mess with the taste.
Pro tip 4: For an extra cool twist, broil the dish for a minute or two at the end. This makes the marshmallows get a crispy, golden top that tastes awesome.
Easy Sweet Potato Casserole Recipe
My favorite Easy Sweet Potato Casserole Recipe
Equipment Needed:
1. Oven (preheated to 350°F)
2. Casserole dish (greased)
3. Large pot
4. Colander (for draining the sweet potatoes)
5. Potato masher
6. Large mixing bowl
7. Spatula
8. Measuring cups and spoons
These are the main items you’ll need to follow the recipe.
Ingredients:
- 4 medium sweet potatoes, peeled and cubed (about 4 cups mashed)
- 1/2 cup granulated sugar
- 2 large eggs, lightly beaten
- 1/3 cup melted butter
- 1/2 cup milk
- 1 teaspoon vanilla extract
- A pinch of salt
- 2 cups mini marshmallows
Instructions:
1. Preheat your oven to 350°F and grease a casserole dish.
2. In a large pot, boil the cubed sweet potatoes until they’re tender (this usually takes about 20 minutes) then drain them.
3. Mash the cooked sweet potatoes until smooth, making sure you have about 4 cups.
4. In a large bowl, mix the mashed sweet potatoes with the granulated sugar, lightly beaten eggs, melted butter, milk, vanilla extract and a pinch of salt until well combined.
5. Pour the sweet potato mixture into the greased casserole dish and even it out with a spatula.
6. Evenly sprinkle the mini marshmallows over the top of the mixture.
7. Place the dish in the oven and bake for 25 to 30 minutes until the marshmallows are melted and lightly golden.
8. Remove the casserole from the oven and let it cool for a few minutes.
9. Serve warm and enjoy this delicious fall favorite with your family and friends.



















