Easy Apple Butternut Squash Casserole – Fall Harvest Dinner

Easy Apple Butternut Squash Casserole is the ultimate fall harvest side dish. After making this many times, I’ve perfected the crispy topping and creamy inside. The warm, comforting flavors will make your family beg for seconds. Start with the recipe card or keep reading for my best tips. If you love recipes like this, you’ll also enjoy Creamy Pandan Coconut Overnight Oats with Mango Drizzle and Creamy Orange Blossom Semolina Pudding with Pistachios.

Why This Easy Apple Butternut Squash Casserole – Fall Harvest Dinner Is Pure Comfort
- Crispy golden topping
- Creamy, tender butternut squash
- Perfect balance of sweet and savory
- Easy to make ahead for holiday dinners
What You'll Need for Easy Apple Butternut Squash Casserole – Fall Harvest Dinner
Choosing the right ingredients makes a big difference, but this recipe is forgiving enough to work with what you have.
- Butternut squash
- Apples
- Onion
- Heavy cream
- Breadcrumbs
- Salt
- Pepper
- Garlic powder
- Nutmeg
- Brown sugar
- Melty butter
- Optional: Chopped pecans
- Optional: Crumbled bacon
- Optional: Shredded cheese

📝 Ingredient Notes
- Butternut squash: You can use frozen, pre-cut butternut squash to save time.
🛒 Tools & Equipment I Recommend
- Food processor — Saves time and effort in prepping butternut squash → See on Amazon
- Baking dish — Ensures even cooking and perfect presentation → See on Amazon

How to Make Easy Apple Butternut Squash Casserole – Fall Harvest Dinner
- Prepare butternut squash: Peel, seed, and cut butternut squash into 1-inch cubes.
- Cook butternut squash: Boil or steam butternut squash until tender. Drain and set aside.
- Sauté onions and apples: Cook onions and apples in butter until softened.
- Mix ingredients: Combine butternut squash, apple mixture, heavy cream, salt, pepper, garlic powder, and nutmeg. Transfer to baking dish.
- Prepare topping: Mix breadcrumbs, brown sugar, and melted butter. Sprinkle over casserole.
- Bake: Bake at 375°F (190°C) for 25-30 minutes, until golden and bubbly.
Cook's Tips for Perfect Easy Apple Butternut Squash Casserole – Fall Harvest Dinner
- Common mistake and fix: Avoid overcooking the butternut squash to prevent it from becoming mushy. Keep an eye on it during boiling or steaming.
- : For a crunchier topping, mix in some chopped pecans or crumbled bacon.
- : Make ahead: Assemble the casserole, but don't bake. Cover and refrigerate up to 24 hours. Bake as directed when ready to serve.
Storing & Reheating Easy Apple Butternut Squash Casserole – Fall Harvest Dinner
Short-Term Storage
Store in an airtight container in the fridge. Store leftovers in an airtight container up to 5 days. Make-ahead tip: Assemble up to 24 hours ahead. Bake as directed when ready to serve.
Freezing Easy Apple Butternut Squash Casserole – Fall Harvest Dinner
Freeze individual portions up to 3 months. Thaw before reheating.
How to Reheat Without Drying It Out
Oven: Reheat in a 350°F (175°C) oven for 15-20 minutes. Microwave: Reheat in the microwave for 2-3 minutes, stirring halfway through.
Recipe Notes
- Chef tip: For a creamier casserole, use an immersion blender to partially blend the butternut squash before mixing.
- Best substitution: Substitute heavy cream with full-fat canned coconut milk for a dairy-free version.
- Make-ahead: Assemble the casserole, but don't bake. Cover and refrigerate up to 24 hours. Bake as directed when ready to serve.
- Scaling: This recipe can be doubled or halved to serve more or fewer people.
- Troubleshooting: If the topping isn't crispy enough, broil the casserole for 2-3 minutes after baking.
Want to level up this recipe?
High-quality baking dish — Ensures even heat distribution for perfectly cooked casseroles → Check price on Amazon
Easy Apple Butternut Squash Casserole – Fall Harvest Dinner

Ingredients
Main Ingredients
- Butternut squash
- Apples
- Onion
- Heavy cream
- Breadcrumbs
Seasonings
- Salt
- Pepper
- Garlic powder
- Nutmeg
- Brown sugar
- Melty butter
Optional Toppings
- Chopped pecans
- Crumbled bacon
- Shredded cheese
Instructions
- Prepare butternut squash: Peel, seed, and cut butternut squash into 1-inch cubes.
- Cook butternut squash: Boil or steam butternut squash until tender. Drain and set aside.
- Sauté onions and apples: Cook onions and apples in butter until softened.
- Mix ingredients: Combine butternut squash, apple mixture, heavy cream, salt, pepper, garlic powder, and nutmeg. Transfer to baking dish.
- Prepare topping: Mix breadcrumbs, brown sugar, and melted butter. Sprinkle over casserole.
- Bake: Bake at 375°F (190°C) for 25-30 minutes, until golden and bubbly.
Notes
- Chef tip: For a creamier casserole, use an immersion blender to partially blend the butternut squash before mixing.
- Best substitution: Substitute heavy cream with full-fat canned coconut milk for a dairy-free version.
- Make-ahead: Assemble the casserole, but don't bake. Cover and refrigerate up to 24 hours. Bake as directed when ready to serve.
- Scaling: This recipe can be doubled or halved to serve more or fewer people.
- Troubleshooting: If the topping isn't crispy enough, broil the casserole for 2-3 minutes after baking.
Storage
- Fridge: Store leftovers in an airtight container up to 5 days.
- Freezer: Freeze individual portions up to 3 months. Thaw before reheating.
- Oven reheat: Reheat in a 350°F (175°C) oven for 15-20 minutes.
- Microwave reheat: Reheat in the microwave for 2-3 minutes, stirring halfway through.
- Make ahead: Assemble up to 24 hours ahead. Bake as directed when ready to serve.
Nutrition Per Serving
- Calories: 250
- Protein: 4g
- Fat: 12g
- Carbs: 32g
- Fiber: 4g
- Sugar: 12g
- Sodium: 200mg
- Cholesterol: 35mg
- Sat. Fat: 7g
Nutritional values are estimates only. Actual values may vary by brand and portion size.
Easy Apple Butternut Squash Casserole – Fall Harvest Dinner FAQs
Yes, assemble the casserole, but don't bake. Cover and refrigerate up to 24 hours. Bake as directed when ready to serve.
Overcooking can cause the casserole to become dry. Keep an eye on it during boiling or steaming to prevent this.
Yes, freeze individual portions up to 3 months. Thaw before reheating.
No, this recipe is not suitable for the air fryer. It's best baked in the oven.
Substitute heavy cream with full-fat canned coconut milk for a dairy-free version.
A Warm Final Note
I can’t wait for you to try Easy Apple Butternut Squash Casserole – Fall Harvest Dinner and see how effortlessly it comes together. When you make it, pop back here and leave a rating or share how it turned out — I love hearing from you!






