Prepare the Beef: If using flank steak or sirloin, slice the beef into thin strips. If using ground beef, break it into small crumbles.
Cook the Beef: Heat the olive oil in a large skillet or wok over medium-high heat. Add the beef and cook until browned and cooked through, about 5-7 minutes. Remove the beef from the pan and set aside.
Sauté the Aromatics: In the same skillet, add the sliced onion and garlic. Sauté for 2-3 minutes until softened and fragrant.
Make the Sauce: Add the soy sauce, sriracha, chili paste (if using), honey, cumin, paprika, and a pinch of salt and pepper to the skillet. Stir well to combine. Let it simmer for 2-3 minutes until the sauce thickens slightly.
Combine the Beef: Return the cooked beef to the skillet and toss it in the sauce, making sure the beef is evenly coated. Cook for an additional 2 minutes, allowing the flavors to meld together.
Serve: Serve the spicy beef mixture over a bed of freshly cooked white rice. Garnish with fresh cilantro, if desired. Enjoy!