"The avocado spread for these unique burgers gets its heat from prepared horseradish. Try the spread on steak or roast beef to make a superb beef sandwich. And remember the bag idea for your favorite guacamole. Kids love to squeeze and mash the avocado in a sealable plastic bag."
In medium bowl or sealable plastic bag, combine avocado, lemon juice, onion, horseradish and salt. Mash with fork or seal bag and squeeze to mash avocado and blend all ingredients. Cover mixture in bowl with plastic wrap pressed onto surface or avocado mixture.
Grill burgers to desired doneness. Serve on buns with lettuce and tomato and top with Zippy Avocado Spread.