Cook your base: Make rice or your grain of choice according to package directions. Fluff and keep warm.
Prep the produce: Dice the onion and bell pepper.
Slice the celery. Mince the garlic. Slice green onions for topping.
Brown the beef: Heat a large skillet over medium-high.
Add olive oil, then the ground beef. Season lightly with salt and pepper. Cook, breaking it up, until browned and no pink remains, about 6–8 minutes.
Drain excess fat if needed.
Sauté the veggies: Push the beef to the side. Add onion, bell pepper, and celery to the open space with a little more oil if the pan is dry. Cook 3–4 minutes until just tender.
Stir in garlic and cook 30 seconds until fragrant.
Season it up: Sprinkle ranch seasoning over the beef and veggies. Stir well to coat. If using carrots, fold them in now for a quick 1–2 minutes so they stay slightly crisp.
Add the Buffalo sauce: Reduce heat to medium.
Pour in Buffalo sauce and the butter if using. Stir until everything is glossy and evenly coated. Taste and adjust with more Buffalo, ranch, or a pinch of salt and pepper.
Build the bowls: Spoon warm rice into bowls.
Top with the Buffalo ranch beef mixture. Add green onions, cheese if using, and a drizzle of ranch. Finish with a squeeze of lime or lemon for brightness.
Make it yours: Add extra celery for crunch, a handful of shredded lettuce for freshness, or a few avocado slices to cool the heat.