In large microwavable bowl, mix cereals and almonds.
In microwavable measuring cup, microwave butter uncovered on High about 30 seconds or until melted. Stir in sugar and lemonade concentrate. Microwave uncovered on High 30 seconds; stir. Pour over cereal mixture, stirring until evenly coated.
Microwave cereal mixture uncovered on High about 5 minutes, stirring every 2 minutes, until mixture begins to brown.
Spread on waxed paper or foil to cool. Store in airtight container.