1. Prepare the Crust:
Preheat your oven to 350°F (175°C).
Crush the digestive biscuits or graham crackers into fine crumbs. You can use a food processor or place the biscuits in a ziplock bag and crush them with a rolling pin.
Mix the crumbs with melted butter and sugar (if using) until well combined.
Advertisement
Press the mixture firmly into the bottom of a 7-inch (18 cm) springform pan, forming an even layer.
Bake the crust for 10 minutes, then let it cool completely.
2. Make the Filling:
