I've made this several times and it is really good. It all comes together in about 10 minutes.

White Chocolate Party Mix
From Hometown Cooking Magazine 12/1999

4 cups tiny pretzels
2 1/2 cups round toasted oat cereal
2 1/2 cups bite size corn chex cereal
1 cup salted peanuts
1 cup M&M candies
2 cups white baking chocolate (12 ounces)
1 Tablespoon shortening

1. In large bowl, combine first five ingredients; set aside. In a microwave-safe bowl, micro-cook white baking bar and shortening on 100% power for 1 to 2 minutes or until baking bar is melted, stirring every minute until smooth. Pour over cereal mixture; mix well.

2. Spread onto a waxed paper lined 15 x 10 x 1" baking pan. Cool completely; break apart. Store in an airtight container.

Makes about 3 1/2 quarts