Delicious Tuna Noodle Casserole

DIRECTIONS

• Preheat oven to 375 degrees.
• Rub inside of a 2 1/2 quart casserole dish with 1 tablespoons butter.
• Bring large pot of salted water to boil over high heat.
• Add noodles and cook until al dente, 5-7 minutes. Drain and transfer noodles to a large bowl.
• Melt 4 tablespoons butter in a medium saucepan over medium-high heat.
• Add half the scallions and cook until softened, 1-2 minutes.
• Add flour and mustard and cook, stirring frequently, for 1 minutes.
• Gradually pour in milk, whisking constantly, and bring to a boil.
• Cook sauce, stirring frequently, until smooth and thickened, 16-18 minutes.
• Season with salt and pepper to taste.
• Transfer sauce to bowl with noodles.
• Add tuna and stir gently to combine.
• Transfer tuna-noodle mixture to prepared dish.
• Melt remaining butter and toss with remaining scallions, bread crumbs, and salt and pepper to taste in a bowl.
• Scatter seasoned bread crumbs over tuna-noodle mixture and bake until golden brown and bubbling, 20-25 minutes.
• Let casserole cool slightly before serving.