Lenore Barron's "The Original Treats" Recipe

My grandmother Lenore Evelyn Barron loved to make dessert for us when she came to stay with us when I was 3. One easy treat she made was printed on the back of the Kellogg's Rice Krispie cereal box.

This particular recipe comes directly from the Kellogg's website:

10 Minutes Preparation Time | 30 Minutes Total | Serves 12

INGREDIENTS
3 tablespoons butter or margarine
1 package (10 oz., about 40) regular marshmallows
— OR —
4 cups miniature marshmallows
6 cups Kellogg's® Rice Krispies® cereal

DIRECTIONS
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 evenly press mixture into 13 x 9 x 2-inch pan coated with cooking spray. Cool. Cut into 2-inch squares. Best if served the same day.

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.

Note 
-For best results, use fresh marshmallows.
-1 jar (7 oz.) marshmallow crème can be substituted for marshmallows.
-Diet, reduced calorie or tub margarine is not recommended.
-Store no more than two days at room temperature in airtight container.
-To freeze, place in layers separated by wax paper in airtight container. Freeze for up to 6 weeks. Let stand at room temperature for 15 minutes before serving.

Source: THE ORIGINAL TREATS™