Preheat oven to 350ºF (180ºC).
Prepare 9" cake pan - I line the bottom of mine with parchment paper.
Using a hand mixer, or stand mixer with whisk attachment, mix eggs and sugar until pale and creamy.
Add 1 cup ricotta, 1 teaspoon vanilla, zest of 1 lemon and juice of 1/2 lemon. Mix until smooth.
Fold the rest of the ingredients - 1.5 cup flour, 1/2 cup almond flour, 1.5 teaspoon baking powder and 1/2 teaspoon salt. Gently mix until batter is uniform, don't over mix.
Cube 1 pear and fold it into the batter.
Transfer batter to the cake pan.
Slice the other pear diagonally, and arrange slices on top of the batter.
Bake 40-45 minutes, until the top turns golden.
To unmold, run a sharp knife along the sides; invert the cake onto a plate or cutting board, peel off parchment paper, then flip it back to a serving dish.
Enjoy warm or cold.