Spicy Buffalo Tacos

In a large nonstick skillet cook buffalo, onion, and garlic over medium-high heat until brown, using a wooden spoon to break up meat as it cooks. Drain off fat. Spoon meat mixture into a 3-1/2- or 4-quart slow cooker. Add beans, kale, tomato sauce, diced tomatoes, chile peppers, chili powder, cumin, oregano, and cayenne pepper. Cover and cook on low-heat setting for 6 to 8 hours or on high-heat setting for 3 to 4 hours.

Divide romaine among warmed flour tortillas. Top each with about 1/2 cup of the meat-bean mixture. Top with chopped tomatoes, green onions, and cheese.