Pear Cranberry Slab Pie

INGREDIENTS

3 3/4 cups

all-purpose flour, plus more for rolling

2 1/2 tsp

coarse salt

1 1/2 tsp

granulated sugar

3 sticks

cold unsalted butter, cut into small pieces

1/2 cup

ice water, plus more if needed

1 1/2 cups

pecan halves, toasted and chopped (about 1 1/2 cups)

1 1/2 cups

all-purpose flour

1 cup

old-fashioned rolled oats

1 1/2 tsp

coarse salt

2 sticks

unsalted butter, softened

1/2 cup

packed light-brown sugar

1 cup

granulated sugar

5 1/4 lb

firm-ripe Bosc or Anjou pears (about 12), peeled, cored, and cut into 1/2-inch wedges

4 tsp

fresh lemon juice

vanilla bean, seeds scraped

1 cup

granulated sugar

1/4 cup

all-purpose flour

1/2 tsp

coarse salt

1 1/4 tsp

ground cinnamon

2 cups

fresh or unthawed frozen cranberries