Cheesy Broccoli, Chicken and Rice Skillet Casserole

Ingredients

• 1/2 tbsp (salted) butter
• 2 Boneless, skinless chicken breasts, (, sliced into thin strips)
• 1 Medium onion, (, sliced into sticks)
• 3 Cloves garlic (, crushed)
• 3/4 cup long grain rice ((eeek, I used white))
• 1/2 cup white wine
• 2 cups sodium-reduced stock ( (I used beef))
• 1 cup milk ((use whatever you have on hand))
• 2 tbsp all purpose flour
• 1/2 tsp (dried) thyme
• 1 tsp dijon mustard
• 1 cup grated old cheddar cheese (, divided)
• 1/2 tsp salt (, plus more)
• 1/4 tsp pepper (, plus more)
• 1 Bunch broccoli (, florets only)