Note that, for this to be any good, you must use proper canned pears. Do not go to the grocery store and buy flavorless so-unripe-they-are-crunchy canned pears. Ever. Nothing good can come from that.
1.5 cups of (granulated white) table sugar
1/4 cup oil
1/2 cup milk
2.5 cups all-purpose flour
1 tsp. soda
1/2 tsp. nutmeg
1/2 tsp. allspice
2 tsp. vanilla flavoring or extract
1/2 cup golden raisins (optional)
plus any excess blended pears (see instructions)
1/2 cup sugar
2 TBSP cornstarch
1/4 tsp. pear extract (optional)
2 tsp. vanilla (optional)
Preheat the oven to 350F.
Combine the larger portion of the pear puree with the sugar and eggs and beat until foamy, then beat in the oil and milk. Stir the dry ingredients together and then add them to the pear mixture. Beat until smooth. Fold in the raisins (if desired). Pour into a bundt pan. Bake at 350F for about 50 minutes (depending on your oven). When it's almost done, start the glaze (below). Let the finished cake cool in its pan for 5-10 minutes, then invert it onto a plate. Spoon glaze over the top while they are both still hot. If you get the top of the cake coated and a decent amount dripping down the sides and there is still glaze left, it can be spooned over individual slices while it lasts.
To make the glaze, combine the pear juice, the remaining pear puree (if any), the 1/2 cup of sugar, and the cornstarch in the saucepan. Stir and bring to a boil over medium heat, stirring frequently, until it thickens up. When you are just about ready to spoon the glaze over the cake, stir in the extract.