Melt the coconut oil in a large skillet with a tight-fitting lid over medium heat.
Add onion and garlic; cook for 5 to 10 minutes or until onion has cooked down and garlic is fragrant. Add chopped steak; cook and stir for 10 minutes or until browned.
Stir in remaining ingredients (broth through thyme). Reduce heat, cover and simmer for 10 minutes or until beef is cooked to desired level of doneness and vegetables are tender-crisp.