Lightened Up Chicken, Broccoli and Rice Casserole (no soup!)

• 2 tbspextra virgin olive oil — or butter
• 8 ozsliced mushrooms — baby bella, finely chopped
• 1small onion
• 5garlic cloves — minced
• 3 tbspall purpose flour
• 2½ cupschicken broth
• 1 cup2% milk — or whole milk
• 1 tbspsoy sauce
• 1 tspkosher salt
• ½ tspblack pepper
• ½ cupplain Greek yogurt
• ¾ cupuncooked long grain white rice — unrinsed
• 12 ozfresh broccoli florets — 1 bag
• 2 cupscooked shredded chicken breast — or cooked shredded chicken thigh
• ¾ cupshredded sharp cheddar cheese — or gruyere

For topping

• ½ cuppanko breadcrumbs
• ¼ cupcheddar — shredded, or parmesan
• 1 tbspmelted butter