CRUST:

1/2 c. melted butter
1 1/4 c. crushed salted pretzels
1 tbsp. sugar

FILLING:

2 (8 oz.) pkgs. cream cheese, softened
3 individual serving packets margarita mix
1/3 tequila
1 tsp. grated lime peel
1/2 c. sugar
4 eggs
1/2 tsp. vanilla

TOPPING:

2 c. sour cream
1 tbsp. fresh lime juice
1/4 c. sugar
1/2 tsp. grated lime peel

Preheat oven to 375 degrees. Combine all ingredients for crust and press in 9 inch spring-form pan. Bake for 6-8 minutes. Cool on wire rack. Beat cream cheese until fluffy; add sugar, margarita mix; beat until light and fluffy. Add eggs, one at a time, beating well after each one. Stir in tequila, lime peel, and vanilla. Pour in crust. Bake at 375 degrees for 25-30 minutes until center is set. Cool 30 minutes. Combine all ingredients for topping. Carefully spread over top of cake. Bake in preheated 425 degree oven for 10 minutes. Cool on wire rack. Refrigerate overnight. May omit tequila, but reduce eggs to 3.