Preheat oven to 350 degrees F. Combine flour, baking powder, baking soda, salt, cinnamon, and cardamom in a bowl and whisk together.
In a separate bowl, combine eggs, almond extract, brown sugar, milk, and melted butter. Whisk together for about one minute, until smooth.
Add wet ingredients to flour mixture and fold together. Then fold in chopped pears.
Spray a springform pan with baking spray/oil and/or line with parchment paper. Pour in batter.
Thinly slice additional pears vertically and squeeze lemon juice on top to prevent pears from browning in the oven. Place pears on top of the batter and sprinkle with sliced almonds. Bake for 55-65 minutes, until a toothpick comes out clean. Allow cake to cool for about 20 minutes.
Optional, dust with confectioners sugar.