Step 1

Preheat the oven to 350 degrees F.

Step 2

Grease a 9x13-inch baking dish.

Step 3

Cook the egg noodles according to package directions, about 10 minutes. Drain the noodles after cooking. Set aside.

Step 4

In a large skillet on the stove-top, heat the olive oil over medium heat.

Step 5

Add the shallots and garlic to the skillet, stirring while cooking for 45 seconds.

Step 6

Add the flour, stirring while cooking until the raw flour smell dissipates, about 1 minute.

Step 7

Add the broth, milk, thyme, lemon zest, salt, nutmeg, and pepper.

Step 8

Stir in the chicken and peas, cooking until heated through.

Step 9

Stir in the noodles and Swiss cheese.

Step 10

Pour the mixture into the prepared baking dish.

Step 11

In a small bowl, mix the bread crumbs and melted butter.

Step 12

Top the casserole with the butter-saturated breadcrumbs.

Step 13

Bake until the top is browned, about 8-10 minutes.

Step 14

Serve!