Chocolate Candy Clusters

8 ounces white baking chocolate, chopped
1 cup milk chocolate chips
1 cup (6 ounces) semisweet chocolate chips
1-1/2 cups chopped walnuts
1-1/2 cups miniature pretzels, broken

In a microwave-safe bowl, melt white chocolate and chips at 70% power for 1 minute; stir. Microwave at additional 10- to 20-second intervals, stirring until smooth. Stir in walnuts and pretzels. Drop by rounded tablespoonfuls onto waxed paper-lined baking sheets. Refrigerate until firm. Store in an airtight container. Makes about 3 dozen.

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