Season the steak with salt and pepper on both sides.
Heat olive oil in a skillet over medium-high heat.
Sear the steak for 4-5 minutes on each side for medium-rare.
Remove the steak from the skillet and let it rest.
In the same skillet, sauté onions and bell peppers until soft.
Add rice to the skillet and stir for a minute.
Pour in the beef broth and bring to a boil.
Cover and simmer for 18-20 minutes until rice is cooked.
Stir in the queso cheese sauce until well combined.
Slice the steak and serve it over the cheesy rice, topped with diced tomatoes and avocado.