Step 1

Preheat an oven to 375 degrees F (190 degrees C).

Step 2

Beat the eggs in a large mixing bowl, then mix in the sugar, vanilla flavoring, anise extract, lime zest, lemon zest, and ricotta cheese until smooth. Toss the chocolate chips with the flour in a plastic bag to coat. Fold in to the ricotta batter until evenly blended. Place the graham cracker crusts onto baking sheets. Evenly divide the batter among the crusts.

Step 3

Bake in the preheated oven for 30 minutes, then rotate the cheesecakes 90 degrees, and continue baking until a knife inserted into the center comes out clean, 20 to 30 minutes longer. Cool to room temperature, then refrigerate at least 2 hours until cold before serving.