Peel and slice your pears. For fancy presentation, slice very thinly. If in a hurry, simply slice in halves or quarters. Set aside.
Preheat your oven to 350℉.
Add all ingredients except the pears and buttter/spray to a blender. Cover and blend on high speed for 1 minute.
Grease your springform pan.
Pour about ¼ inch of batter into the bottom of your pan. Set it on a stove burner on medium heat and cook until the batter is set about 2 minutes. It will start to form bubbles all over.
Remove the cake pan from the heat, and arrange the pears on top of the cooked batter. For halves, spread them face down in a circle. For thinner slices, arrange in a circular fan shape.
Pour the rest of the batter on top of the pears. Smooth the top with a spoon. If the pears peek through, that’s alright.
Place the cake the center of the oven and bake for 1 hour, or until nicely browned and a toothpick stuck into the center comes out clean.
Allow to cool slightly before serving - the clafoutis will fall a bit. Top with a dusting of powdered sugar.