Make your leftovers feel new again with this Leftover Ham Casserole recipe! Ham, rice, and veggies are rejuvenated in a creamy, savory sauce, topped with parmesan and breadcrumbs, then baked until bubbly.
Meanwhile, in a large saucepan, melt 4 tablespoons of the butter. Add the 1 medium onion and cook over moderate heat, until softened, about 3 minutes. Add the 3 cloves garlic, and cook until fragrant, about 30 seconds.
Stir in ¼ cup flour and cook 1-2 minutes; add 1/2 cup white wine (or dry vermouth) and stir. Add 2 cups chicken stock and 2 cups whole milk, and bring to a bubble. Cook the sauce over medium-high heat, stirring occasionally, until thickened, about 6-8 minutes.
Cook 3 cups broccoli florets by placing them in a microwave safe bowl and covering it. Microwave for 3-4 minutes until broccoli is bright green and tender. Or, bring a large pot of water to a boil, add broccoli and cook for 4 minutes until broccoli is bright green and tender.
To the sauce, add the 4 cups white rice, cooked broccoli, 2 cups cooked ham, and 2 cups cheddar cheese, and toss to coat. Season with salt and pepper, to taste. Transfer the mixture to a large baking dish.
In a small skillet, melt the remaining 1 tablespoon of butter. Add the 1/2 cup panko breadcrumbs and cook over moderate heat, stirring, until golden, about 1 minute. Remove from the heat and stir in the 2 Tablespoons fresh parsley and 1/2 cup grated parmesan. Sprinkle the panko mixture over the casserole and bake for 30 minutes, or until bubbly. Serve immediately.
Notes
To make ahead: Save time by making the sauce (without the ham, rice, or vegetables added) up to 1 day ahead of time. Keep it in an airtight container, then reheat it in a saucepan before assembling and baking the casserole as normal.You can also assemble the casserole the day before baking. Keep covered in the fridge, then bake the next day.To store: The baked casserole is best served immediately. Any leftovers can be stored in an airtight container in the fridge for 1 or 2 days, but just know that the vegetables and rice will become soggy the longer they sit.To freeze: Assemble the casserole without the breadcrumb topping, then cover and freeze. It freezes well for up to 3 months. Let it thaw in the fridge before adding the breadcrumbs and baking.