Grease and flour a 10-inch tart pan.

Roll out the puff pastry on a lightly floured surface.

Transfer to the pan and trim to fit, pinching the sides to create a frame.

Sprinkle the breadcrumbs over the bottom of the shell.

Preheat the oven to 350°F

Mix the sour cream, egg, and half of the grated cheese.

Season with salt, pepper, remaining 1/2 teaspoon nutmeg, and cloves. Set aside.

Core the pears and cut vertically into slices.

Spread the creamy mixture evenly over the puff pastry.

Arrange pear slices at the bottom of the pan.

Sprinkle with the remaining cheese on top.

Bake for 25 minutes.

Roughly chop the walnuts.

Caramelize them in a hot pan with the powdered sugar and 1/2 teaspoon nutmeg..

Once the sugar has melted, transfer to a sheet of baking paper. Don’t let them get too brown.

Break them apart if necessary.

Remove from the oven and sprinkle with walnuts.

Bake for another 10minutes.

Let cool for 10 minutes, then slice and serve.