Creamy Margarita Pretzel Bars

INGREDIENTS

For the crust:

1/2 cup

unsalted butter, melted

1/4 cup

granulated sugar

2 1/2 cups

pretzel sticks

sheets of graham crackers (4 squares)

For the filling:

1 14 ounce can

sweetened condensed milk

1/3

to ½ cup fresh lime juice (about 4 juicy limes)

2 tbsp

tequila

2 tbsp

Cointreau

1 cup

heavy whipping cream

For the topping:

Zest of 1 lime

1 tsp

granulated sugar