Preheat the oven to 175°C (350°F) and grease a 9-inch springform pan.
In a large bowl, beat the ricotta cheese until smooth and creamy.
Add sugar and mix until well combined.
Beat in the eggs one at a time.
Stir in fresh lemon juice, lemon zest, and vanilla extract.
Fold in the flour and mix until the batter is smooth.
Pour the mixture into the prepared pan.
Bake for 50–55 minutes or until the center is set.
Allow the cheesecake to cool completely before refrigerating for at least 4 hours.
Garnish with lemon slices or powdered sugar before serving.