Step 1

Preheat oven to 400 degrees F (200 degrees C).

Step 2

Press pie pasty into the bottom of a 9-inch pie plate.

Step 3

Bake pie crust in preheated oven for 5 minutes, use a fork to poke holes into the crust, and continue cooking until lightly browned, about 5 minutes more.

Step 4

Reduce oven heat to 350 degrees F (175 degrees C).

Step 5

Mix 1/2 cup Cheddar cheese, Swiss cheese, and 1 tablespoon flour in a bowl; spread over the warm pie crust.

Step 6

Stir ham and honey mustard together in a bowl to coat the ham completely; spoon over the cheese mixture.

Step 7

Mix half-and-half, eggs, green onions, 1 tablespoon flour, and salt together in bowl. Pour mixture carefully over the ham layer; top with remaining Cheddar cheese.

Step 8

Bake in preheated oven until set in the center, 40 to 50 minutes. Cool for 10 minutes before cutting.