Spread the bottom of a square springform pan (24 x 24 cm) with oil and cover with baking parchment. Melt butter. Fill biscuits into a freezer bag and crumble them finely with the dough roll. Mix the biscuit crumbs with butter and press the mixture into the mould as a base. Chill for about 30 minutes.
Cream ricotta, mascarpone and sugar. Stir in the eggs one by one. Add lemon zest. Select the raspberries, spread on the base and spread the ricotta mixture on top. Bake in the preheated oven (electric cooker: 175 °C/ convection oven: 150 °C/ gas: see manufacturer) for about 50 minutes until the mixture is firm. Take out and let cool down
Waiting time approx. 30 minutes