Better Than Takeout Beef & Broccoli

First make the sauce by whisking together all ingredients until the flour has fully dissolved. Heat avocado oil in a large, deep skillet over medium heat. Add the broccoli and add 2 tablespoons water. Sauté for about 5 minutes then set aside. Rinse the pan and then add the sesame oil over medium high heat. Season the beef with salt and pepper. Add the beef and brown on each side for about 2 minutes (add 2 more minutes each side if using chicken). Turn heat to medium then add the sauce. Simmer until beef is cooked through then stir in the broccoli. Serve over rice with sesame seeds to top.