Chihuahua-Style Salsa Verde

Combine the tomatillos jalapenos lettuce garlic cilantro cumin salt and pepper in a blender or food processor; process until chopped to desired consistency.

Melt the butter in a saucepan over medium heat; cook the onions in the melted butter until clarified about 5 minutes. Pour the tomatillo mixture and the chicken broth into the sauce pan; cook stirring occasionally until the salsa begins to thicken about 20 minutes.