Start by patting your flank steak dry with paper towels. Slice the steak thinly against the grain for tenderness. Season evenly with garlic powder, onion powder, salt, and pepper.
Place your skillet or cast iron pan over medium-high heat and add the olive oil. Heat until shimmering but not smoking.
Add the steak strips in a single layer. Cook undisturbed for about 2 minutes, then flip and cook another 1-2 minutes until browned but juicy. Remove from pan and set aside.
In a medium saucepan, gently warm the queso cheese sauce over low heat, stirring occasionally. Add a splash of milk or water if too thick.
Place cooked rice on serving plates, top with steak slices, and drizzle with warm queso sauce. Garnish with fresh cilantro and serve immediately.
