"Discard" Sourdough Pecan Sticky Buns

INGREDIENTS

1 cup

unfed sourdough starter (what you would typically throw out when feeding your starter)

1/4 cup

warm whole milk

2 1/4 tsp

yeast

1/2 tsp

granulated sugar

1 lb

unsalted butter (1 stick melted for dough, 1 stick melted for filling, 2 softened for caramel sauce)

1 cup

unpacked light brown sugar, divided (1/3 c dough, ⅔ c filling)

1 tsp

kosher salt

2 tsp

vanilla extract

egg

1 tbsp

avocado oil (or other vegetable oil)

2 cups

all purpose flour

1 cup

packed dark brown sugar

2 cups

chopped pecans, divided

3 tbsp

cinnamon