The first step is to peel, core and puree two of the pears to make ½ cup of pear puree. If you get more than ½ cup, you can save it for something else. The other 2 or 3 pears are to be chopped up and stirred into the cake. You can make the pear puree in a blender or mini chopper.
Preheat the oven to 350°. Grease and flour a 12-cup Bundt pan. My favorite way is to brush melted shortening all over the inside of the pan with a pastry brush, then dust with flour. The pastry brush gets all the little nooks in the fluted pan.
Whisk together the flour, baking soda, salt and pumpkin pie spice.
In a mixing bowl, beat together the sugar, ½ cup of your pear puree, oil and vanilla. Add each egg one at time until blended.
With low speed of the mixer or by hand, beat in the spiced flour mixture. Beat until ingredients are blended and batter is smooth.
Peel remaining 2 or 3 pears and chop. Stir chopped pear into the cake batter, the pour it into the pan.
Run a scraper or a knife through the batter to get rid of any lumps.
Bake for 1 hour or until a toothpick inserted in the center comes out with a few crumbs attached.
Transfer the pan to a rack and let the cake cool for 10 minutes, then invert it onto the rack and let cool completely, about 20 minutes.
When cake is cool, prepare the caramel icing.
Caramel Icing
Put the butter, brown sugar, salt and cream in a 2 quart saucepan and heat over medium just until mixture comes to a boil. Boil 1 minute. Remove from heat; let stand 5 minutes. Whisk in powdered sugar until smooth, then immediately pour over cooled cake. Garnish with Maldon salt if desired