Avocado Spread: Place all ingredients except chiles and cilantro in bowl of electric mixer. Beat on low speed 1 min.; scrape down side of bowl. Beat an additional 30 sec. Fold in chiles and cilantro. Refrigerate until ready to use.
Veggie Burgers: Combine all ingredients except cracker crumbs, rolls, cucumbers and sprouts; stir in crumbs. (Add more crumbs if mixture is too wet to shape into patties.) Use #16 scoop to measure vegetable mixture for each patty. Flatten patties slightly; place in parchment-lined sheet pan. Refrigerate until ready to cook.
For each serving: Cook 1 patty in 1-1/2 tsp. hot oil in skillet 1 min. on each side or until golden brown on both sides. Transfer to 350ºF-convection oven; bake 5 to 8 min. or until heated through. Spread 1 Tbsp. Avocado Spread onto each cut side of roll. Fill with 1 Veggie Burger, 1/4 oz. cucumbers and about 1 Tbsp. sprouts.