1In small bowl, mix steak seasoning and brown sugar; set aside.
2In large microwavable bowl, microwave butter on High about 40 seconds or until melted. Stir in cereals, nuts and fried onions until evenly coated. Stir in sugar mixture until even coated.
3Microwave uncovered on High for 5 to 6 minutes, stirring every 2 minutes, until brown. Spread on cookie sheet to cool. Store in airtight container.