Start by zesting one of the oranges and then juicing both. Set aside the juice and zest as you’ll use them for the sauce.
In a mixing bowl, combine the orange juice, chicken broth (reserve ¼ cup), soy sauce, cornstarch, and red pepper flakes. Whisk until smooth and set aside.
Heat the canola oil in a large wok or skillet over medium-high heat. Add the sliced beef to the pan, cooking for about 3-4 minutes or until browned. Remove the beef from the pan and set it aside.
In the same pan, add the green beans, yellow bell pepper, green onions, ginger, and garlic. Stir-fry for about 5 minutes, or until the vegetables are tender-crisp.
Return the cooked beef to the pan with the vegetables. Pour the prepared sauce over the beef and vegetables, stirring to coat everything evenly. Cook for an additional 2-3 minutes, or until the sauce thickens and everything is heated through.
Serve the Szechuan Orange Ginger Beef hot over a bed of fluffy brown rice. Garnish with additional green onions if desired.