One 9- or 10-inch pie crust
1 tablespoon olive oil
½ cup diced onion
1 clove garlic, peeled and minced
½ cup cooked or uncooked sliced mushrooms
½ cup diced, roasted green chile
1 cup corn kernels
2½ cups diced, cooked chicken
4 tablespoons butter
4 tablespoons all-purpose flour
1 cup chicken stock/broth
1 cup milk
½ cup grated cheddar
1 teaspoon salt
½
