PREPARATION:
- For pesto, with motor running, drop garlic through feed tube of food processor; process until minced. Add cilantro, jalapeño pepper and salt; process until cilantro is chopped.
- With motor running, slowly add oil through feed tube; process until thick paste forms. Transfer to container with tight-fitting lid. Refrigerate until needed.
- To complete recipe, prepare barbecue grill for direct cooking.
- Combine beef, 1/4 cup pesto and salt in large bowl; mix well. Form into 4 patties. Place patties on grid over medium heat. Grill, uncovered, 8 to 10 minutes (or, uncovered, 13 to 15 minutes) to medium (160°F), turning once. Add cheese to patties during last 1 minute of grilling.
- While patties are cooking, combine mayonnaise and remaining 1 tablespoon pesto in small bowl; mix well. Top patties with mayonnaise mixture. Serve on rolls with avocado and salsa.
