Step #1 Stir the milk with the vinegar & let this stand for 10 mins.
Step #2 Stir in the vanilla.
Step #3 Meanwhile, in a bowl, whisk together the flour, granulated sugar, baking powder, baking soda, & salt.
Step #4 Using a pastry mixer, cut in the butter just until it forms coarse crumbs.
Step #5 Drizzle the milk mixture over top, stirring with a fork until a sticky dough forms.
Step #6 Set aside for the topping.
Step #7 In a separate bowl, stir the brown sugar with the cornstarch.
Step #8 Add the pears & raspberries & carefully toss to mix.
Step #9 Divide among eight 3/4-c ovenproof coffee or custard c.
Step #10 Place on a rimmed baking sheet.
Step #11 Drop the topping by spoonfuls over the fruit, leaving some visible.
Step #12 Sprinkle top with turbinado sugar.
Step #13 Bake in the centre of a 375 degree F oven until the filling is bubbling & the topping is golden & not doughy underneath when lifted with a spoon, about 30 mins.
Step #14 Let cool on a rack for 10 mins.
Step #15 Serve warm.
Step #16 Note: The cobbler can also be baked in a 7" x 11" baking dish.
Step #17 Put in all the filling & top this with 8 dollops of topping.