1 tbsp. milk
1 large egg
1/4 tbsp. ground black pepper
1/2 tsp. salt
3/4 cup panko breadcrumb
1/2 cup all-purpose flour
1 large onion
1 1/4 cups half-and-half
3/4 cup chicken or vegetable broth
2 tbsp. all-purpose flour
2 cloves garlic, minced
1/2 tsp. ground black pepper
8 oz. mushrooms, sliced into halves or quarters
2 tbsp. unsalted butter
1 1/4 tbsp. salt
1 pound fresh green beans