1. In large saucepan melt butter over low heat. Add marshmallows and stir until completely melted. Remove from heat.

2. Add KELLOGG'S RICE KRISPIES cereal. Stir until well coated.

3. Using buttered spatula or wax paper spread mixture into 13 x 9 x 2-inch pan coated with cooking spray, leaving uneven surface. (Do not press firmly.) Arrange gummy worms on top. Sprinkle with digestive crumbs, lightly pressing into cereal mixture. Cool. Cut into 2-inch squares.

MICROWAVE DIRECTIONS: In microwave-safe bowl heat butter and marshmallows on HIGH for 3 minutes, stirring after 2 minutes. Stir until smooth. Follow steps 2 and 3 above. Microwave cooking times may vary.