Preheat oven to 350°F (175°C). Grease and flour two 9-inch cake pans.
In a large bowl, whisk together flour, sugar, baking powder, and salt.
Add softened butter and mix until the mixture resembles coarse crumbs.
In a separate bowl, whisk together eggs, vanilla extract, milk, ricotta cheese, and orange zest.
Gradually add the wet ingredients to the dry ingredients, mixing until just combined. Do not overmix.
Divide the batter evenly between the prepared cake pans and bake for 30-35 minutes, or until a toothpick inserted into the center comes out clean.
Let the cakes cool in the pans for 10 minutes before inverting them onto a wire rack to cool completely.
While the cakes are cooling, prepare the filling. In a medium bowl, combine ricotta cheese, powdered sugar, heavy cream, and vanilla extract. Beat until smooth and creamy.
Gently fold in the mini chocolate chips and chopped candied orange peel.
Once the cakes are completely cool, place one layer on a serving plate. Spread a generous amount of the cannoli filling over the top.
Place the second cake layer on top. Frost the entire cake with the remaining cannoli filling. Garnish with extra chocolate chips or candied orange peel if desired.
Notes
For a richer flavor, you can add a tablespoon of marsala wine to the filling. Ensure the ricotta cheese for the filling is very well-drained to avoid a watery consistency.