Thanks to a wonderful reader, we finally have the real recipe!!! See below! You can also go here, to see a video of the owner making the Boom Boom recipe.
SAL HERNANDEZ / CHUY'S MEXICAN RESTAURANT
10 corn tortillas
1 1/4 lb cooked roasted chicken
1/2 c vegetable broth
1/4 c water
1/4 T each salt and pepper
3/4 lb roasted green chilies
2 oz tomatillos
1 1/2 oz cilantro
1 oz green onions
3/4 oz minced cerrano peppers
1/2 oz lime juice
1 1/4 lb American cheese
additional mixed shredded cheese for topping
In a saucepan, add vegetable broth, water and spices and place over a medium to high flame. Using a food processor, puree roasted green chilies, tomatillos, cilantro, green onions, serranos and lime juice.
Add to saucepan, stirring in well. Bring mixture to a slow boil. Lower flame and slowly add American cheese, whipping as needed to remove clumps and make sure it doesn’t stick to the bottom. When the cheese is melted and mixed, remove from heat. Yields 1 Quart.
To make enchiladas, fill a with 2 ounces of cooked, roasted chicken. Roll up and place in a baking pan. Top with mixed cheese, as needed. Warm in a hot oven for 4 minutes, until cheese is melted. Top with Boom-Boom Sauce.