Ingredients
Method
- Crush the biscuits to fine crumbs. Stir in the melted butter and salt, press firmly over the bottom and up the sides of a 9-inch (23 cm) loose-bottom tart tin and chill for 30 minutes.
- Put the butter and dark brown sugar in a nonstick saucepan over low heat and stir until the butter melts and the sugar dissolves, 2 to 3 minutes.
- Add the condensed milk, raise the heat to medium-high and bring to a rolling boil, stirring constantly. Boil for about 1 minute, until thickened and light golden, then remove from the heat.
- Pour the hot toffee into the chilled base, spread it evenly, cool for a few minutes and refrigerate for at least 1 hour, until set.
- Shortly before serving, slice the bananas into 1/2-inch (1 cm) rounds, toss with the lemon juice if using, and arrange them over the toffee.
- Whip the cream with the powdered sugar and vanilla to soft-medium peaks. Spread or pipe it over the bananas, finish with grated chocolate or cocoa, remove from the tin and serve.
Notes
Storage: keep the finished pie in the refrigerator and do not leave it out for more than 2 hours. It is best eaten the day it is assembled; leftovers keep about a day in the fridge. Not suitable for freezing once topped.
Make-ahead: make the base and toffee layer up to a day ahead, cover and refrigerate, then add the bananas and cream shortly before serving.
Substitutions: graham crackers instead of digestives; light brown sugar for a milder toffee; a 397 g can of ready-made caramel (dulce de leche) instead of making the toffee.
Nutrition is an estimate, not a laboratory analysis.
