Ingredients
Method
- Heat oven to 375°F. Use 1 teaspoon of the butter to grease a 9x13-inch dish. Cook noodles in boiling water for 2 minutes less than package directions; drain.
- Melt 3 tablespoons butter in a saucepan over medium heat. Whisk in flour and stir 1 minute. Gradually whisk in milk and broth; simmer 3–5 minutes until lightly thickened. Stir in mustard, zest, salt and pepper.
- Fold in noodles, tuna and frozen peas. Spread in the dish. Melt the remaining 2 teaspoons butter and mix with panko and Parmesan; scatter over the casserole.
- Bake uncovered 25–30 minutes, until golden and the center reaches 165°F. Rest 10 minutes.
Notes
Equipment: 9x13-inch baking dish, large skillet, large mixing bowl, instant-read thermometer.
Serving size: 1/6 of the recipe.
For freezing, prepare through the filling step, cool promptly in shallow containers and refrigerate within 2 hours. Freeze cold filling airtight for up to 2 months; keep the breadcrumb topping separate and dry. Thaw filling overnight in the refrigerator, transfer to a baking dish and heat covered at 375°F for 25–35 minutes. Add freshly mixed topping and bake uncovered another 15–20 minutes, until 165°F in the center.
Refrigerate leftovers in shallow containers within 2 hours (1 hour above 90°F); use within 3–4 days. Reheat the center to 165°F.
