Banoffee Pie is a classic British dessert, first invented at a pub in East Sussex in 1971. Even so, I always think of it around St. Patty’s Day (probably because the first time I tried Banoffee was while visiting Northern Ireland). So even though it isn’t technically Irish, I still think it makes the most delightful St. Patty’s Day treat. Plus, Pi day happens a few days before St. Patty’s Day (3.14, get it?), so this pie can pull double duty. If you’re not familiar with Banoffee Pie, it’s made with layers of bananas, dulce de leche, and whipped cream, all inside a buttery graham cracker crust. In other words,…