Preheat the oven to 190°C (170°C fan-forced). Position a rack in the center of the oven. Grease a 23 x 28cm baking tray with a depth of approximately 2.5cm.
Prepare the pancake shake mix according to the package instructions.
Pour the prepared batter into the greased tray.
Spoon the lemon curd evenly over the batter.
Add 1–2 tablespoons of water to the ricotta and stir until smooth and slightly loosened.
Spoon the ricotta over the lemon curd.
Using a knife or skewer, gently swirl the lemon curd and ricotta through the batter.
Bake the Lemon Ricotta Tray Cake for 20 minutes or until set.
Remove from the oven.
Turn the grill (broiler) to high and grill for 1–2 minutes until the top becomes lightly golden.
Serve warm and enjoy.