In a bowl mix the base ingredients, cut in butter, into crumbly texture
Dump onto parchment lined baking pan, press mixture nicely covering the pan
Bake 30 mins, on preheated 350 F
In a bowl, mix tequila, Cointreau, and lime juice
In another bowl, mix flour, BP, grated lime wedges, salt, and sugar
Crack in eggs into the bowl, mix with electric mixer until well combined
Pour in liquor mixture, blend to just combine
Pour mixture onto baked base
Bake for 25-30 mins
Take out, cool completely, slice, sprinkle with icing sugar and serve