Layered Thanksgiving Leftover Casserole with Mashed Potato Crust

By AislePrompt Test Kitchen · Reviewed by AislePrompt Editorial · ·

A layered casserole combining mashed potatoes, stuffing, turkey, corn, and rich gravy for a satisfying, all-in-one leftover meal. This american-inspired thanksgiving ready in about 45 minutes pairs leftover mashed potatoes, leftover stuffing, leftover turkey, shredded for a weeknight-friendly dinner that comes together with one pan and minimal cleanup. Each serving lands at about 420 calories and feeds 6, so it slots cleanly into a weekly meal plan and pairs well with a quick salad or grain on the side. Tap "Plan a meal with the AI" below to drop this recipe into your week and send the ingredients straight to Instacart.

★ 4.3 (10 ratings) Prep: 15 min Cook: 30 min Serves 6 American cuisine 420 cal/serving
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Ingredients

Instructions

  1. Step 1: Preheat your oven to 400°F. In a medium bowl, whisk together 1 1/2 cups leftover turkey or chicken gravy and 1/2 cup whole milk until smooth.
  2. Step 2: Lightly grease a 9x9-inch baking dish with butter, then evenly press 3 cups leftover mashed potatoes into the bottom to form a crust layer.
  3. Step 3: Sprinkle 1 cup frozen corn kernels evenly over the mashed potato crust, then layer 2 cups leftover stuffing over the corn.
  4. Step 4: Add 2 cups shredded leftover turkey on top of the stuffing layer, then pour the gravy and milk mixture evenly over all layers to moisten.
  5. Step 5: Spread 1 cup shredded cheddar cheese over the top, and drizzle 2 tbsp melted butter evenly.
  6. Step 6: Bake uncovered for 25-30 minutes until the cheese is melted, golden, and bubbly and the casserole is heated through.
  7. Step 7: Let cool for 5 minutes before serving to allow layers to set for easier slicing.

Frequently asked questions

How long does Layered Thanksgiving Leftover Casserole with Mashed Potato Crust take to make?

Total time is about 45 minutes (15 min prep + 30 min cook). Most home cooks find this fits comfortably into a weeknight; double the batch on Sunday for two dinners.

How do I store leftover Layered Thanksgiving Leftover Casserole with Mashed Potato Crust?

Cool to room temperature within 2 hours, then store in an airtight container in the fridge for up to 4 days. Reheat covered in a 350°F oven for 10-12 minutes, or microwave at 70% power in 60-second bursts to keep leftover mashed potatoes from drying out.

Can I substitute ingredients in Layered Thanksgiving Leftover Casserole with Mashed Potato Crust?

Yes — most ingredients in this recipe have flexible swaps. For oil, use any neutral high-smoke-point oil (avocado, grapeseed, refined coconut). For aromatics, dried herbs at ⅓ the volume of fresh work in a pinch. The full ingredient list is shoppable on Instacart so you can see substitutes in real time.

How do I scale Layered Thanksgiving Leftover Casserole with Mashed Potato Crust for a different number of people?

The recipe is written for 6 servings. Multiply each ingredient by (your serving target / 6). Cook time stays roughly the same up to 2x; for 3-4x batches, switch from a skillet to a sheet pan or stockpot so the food isn't crowded — overcrowding steams instead of browns.

What goes well with Layered Thanksgiving Leftover Casserole with Mashed Potato Crust?

American thanksgiving like this pair well with a simple grain (rice, couscous, or crusty bread), a quick salad with acid (lemon vinaigrette, pickled onions), and a pan sauce or yogurt-based dip. Tap "Plan a meal with the AI" to get specific side suggestions.

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