Cut meat into ½-inch squares. Brown meat in butter about 5 minutes.
Add cauliflower, green pepper, soy sauce and garlic. Stir lightly to coat vegetables with soy sauce. Cover pan and simmer until vegetables are barely tender, about 10 minutes.
Blend cornstarch, sugar and broth.
Add to meat mixture with scallions. Cook, stirring constantly, until thoroughly heated and sauce is thickened.
Serve on a bed of fluffy hot rice.
Notes
This dish is a fusion of east and west; it combines butter-browned beef with a savoury sauce of soy sauce, garlic and broth.