Green Bean Casserole from Scratch | Umami

Ingredients

• 2 tablespoons salt
• 1 & 1/2 lbs. fresh green beans (rinsed and ends trimmed)
• 2 Tbsp. butter {I use salted}
• 1 small onion (chopped)
• 2 cloves garlic (minced)
• 2 large portobello mushrooms (chopped)
• 1 tsp. salt
• 1 tsp. black pepper
• 2 Tbsp. all-purpose flour
• 1 cup chicken broth
• 1 cup half-and-half
• 1/2 cup Panko bread crumbs
• 6 oz french fried onions