Heat a large skillet over medium-high heat and add the butter and the shrimp. Saute the shrimp until pink then add the onions, tomatoes and the cilantro. Let it sit for about 2 minutes then enhance the favor by adding the tequila, chili powder, if desired, salt and pepper, to taste. Then let it sit for 1 to 2 minutes so it may absorb the favor of the tequila.
Serve with rice and vegetables.
This recipe was provided by a chef, restaurant or culinary professional. It has not been tested for home use.