1) In a large bowl, combine popcorn and half of the crushed Thin Mints® cookies. In a microwave, melt baking chips with shortening; stir until smooth. Pour over popcorn mixture; toss to coat.
2) Immediately spread onto waxed paper; sprinkle with remaining crushed Thin Mints® cookies. Melt baking chips in microwave; stir until smooth. Drizzle over popcorn; let stand until set.
3) Break into pieces. Store in an airtight container. Yield: 3-1/2 quarts.
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