MEDITERRANEAN Spread: Beat cream cheese in large bowl with mixer 30 sec. or until creamy. Add remaining ingredients; beat just until blended. Refrigerate until ready to serve.
CUCUMBER-MINT Sauce: Combine ingredients. Refrigerate until ready to serve.
LAMB Patties: Mix meat, green onions, garlic, salt and pepper. Shape into 6-oz. patties, inserting about 1 oz. feta into center of each; seal edges to completely enclose cheese. Refrigerate until ready to use.
FOR each serving: Grill 1 patty 4 to 5 min. on each side or until done (160ºF). Spread 1 Tbsp. Mediterranean Spread onto bottom half of roll; spread top half of roll with 1 Tbsp. Cucumber-Mint Sauce. Fill with 2 cucumber pieces, 2 tomato slices, 1 burger and additional 1 Tbsp. of the remaining Cucumber-Mint Sauce.