01 - Preheat oven to 350°F (177°C) and line two baking sheets with parchment paper.
02 - Brush both sides of each tortilla with melted butter using a pastry brush.
03 - Mix granulated sugar and ground cinnamon in a bowl, then sprinkle evenly over both sides of the tortillas.
04 - Cut each tortilla into 8 wedges using a sharp knife or pizza cutter. Arrange the pieces in a single layer on the prepared baking sheets.
05 - Bake for 8 to 10 minutes, turning chips once halfway through baking, until golden brown and crisp. Cool completely on a wire rack.
06 - In a medium bowl, use an electric mixer or whisk to blend ricotta cheese, mascarpone cheese, powdered sugar, and vanilla extract until smooth and creamy.
07 - Fold in mini dark chocolate chips and orange zest, if desired, using a spatula.
08 - Transfer dip to a serving bowl. Garnish with extra chocolate chips if preferred. Present with cooled cinnamon sugar chips for dipping.