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Apple Butternut Squash Casserole Recipe

Apple Butternut Squash Casserole Recipe

Cozy baked casserole with tender apple–butternut squash and a crisp oat-pecan topping. Perfect for fall gatherings or weeknights.
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Prep Time: 25 minutes
Cook Time: 50 minutes
Total Time: 1 hour 15 minutes
Servings: 8

Ingredients
 

Main Ingredients

  • 2.5 lb butternut squash, peeled and cut into 1-inch cubes
  • 1.5 lb tart apples, peeled, cored, and thinly sliced
  • 1 tbsp lemon juice to keep apples from browning
  • 0.25 cup apple cider
  • 1 tbsp cornstarch helps thicken juices
  • 0.33 cup brown sugar, packed for the filling
  • 2 tbsp maple syrup
  • 2 tsp ground cinnamon
  • 0.25 tsp ground nutmeg
  • 0.5 tsp kosher salt
  • 1 tsp vanilla extract
  • 3 tbsp unsalted butter, melted for the filling
  • 0.75 cup old-fashioned oats for the topping
  • 0.75 cup pecans, chopped for the topping
  • 0.5 cup all-purpose flour for the topping
  • 0.25 cup brown sugar, packed for the topping
  • 3 tbsp unsalted butter, melted for the topping
  • 0.33 cup dried cranberries optional, for the topping

Instructions

Preparation Steps

  • Heat oven to 375°F. Grease a 9x13-inch baking dish.
  • Prep produce. Peel and cube squash; peel, core, and thinly slice apples. Toss apples with lemon juice.
  • Combine squash, apples, apple cider, cornstarch, 0.33 cup brown sugar, maple syrup, cinnamon, nutmeg, salt, vanilla, and 3 tbsp melted butter. Stir to coat evenly.
  • Spread the mixture in the prepared dish and cover tightly with foil.
  • Stir oats, flour, pecans, 0.25 cup brown sugar, and remaining 3 tbsp melted butter in a bowl. Fold in cranberries if using.
  • Bake covered for 25 minutes to begin softening the squash.
  • Uncover, scatter the oat-pecan topping evenly over the filling, and bake 25–30 minutes more until squash is tender and the top is crisp. Rest 10 minutes before serving.

Notes

Variation: Swap pecans for walnuts, or add a pinch of ginger for extra warmth. Serve warm with vanilla yogurt or a scoop of ice cream. Store leftovers covered in the fridge up to 4 days; reheat at 350°F until warmed through. The topping stays crisp if reheated uncovered.
This recipe is an original creation inspired by classic Apple Butternut Squash Casserole Recipe flavors. All ingredient ratios and instructions are independently developed.