In a medium bowl, whisk together ricotta cheese, granulated sugar, eggs, and orange zest. Whisk in flour until just combined.
Heat canola oil in a large nonstick skillet over medium-low heat. Working in batches (and adding more oil to skillet as needed), add batter, using a scant 1/4 cup for each pancake. Cook until browned, 4 to 5 minutes per side. Transfer pancakes to a paper-towel-lined plate to drain. Serve hot, dusted with confectioners' sugar or drizzled with maple syrup.