This is a great recipe from Cousin Nancy . . .

Beef Kabobs with Avocado Sauce

3 Tbsp. extra virgin olive oil                           1 ripe avocado, seeded, peeled

1 Tbsp. minced garlic                                    ½ cup seedless cucumber, chopped

1 Tbsp. minced onion                                   ¼ cup sour cream

1 tsp. oregano                                             2 Tbsp. lime juice

1 tsp. fresh ground black pepper                   1 tsp. kosher salt

½ tsp. kosher salt                                        1 tsp. ground cumin

3 lbs. beef top sirloin steak, 1” thick              Peppers & Onions for grilling

In large bowl combine oil, garlic and onion, oregano, pepper and the ½ tsp. salt; set aside.  Rim fat from meat.  Cut meat in 1” cubes.  Add meat to oil mixture; toss to coat evenly.  Let stand at room temperature for 30 minutes.  Meanwhile, in food processor combine avocado, cucumber, sour cream, lime juice, 1 Tbsp. water, the 1 tsp. salt and cumin.  Cover and process until smooth.  Transfer to serving bowl.   Put meat, peppers and onions on skewers.  Grill turning to brown evenly.  Serve with Avocado sauce.