Recipe: Sweet Potato Spice Cake with Pecan Streusel Topping

INGREDIENTS

3 oz

unbleached all-purpose flour

1/2 cup

very firmly packed light brown sugar

1/2 cup

chopped toasted pecans

1/16 tsp

table salt

2 oz

or 1/4 cup) unsalted butter, melted

3/4 cup

light flavored olive oil (or use vegetable oil), plus more for greasing pan

1 1/2 cups

very firmly packed light brown sugar

large eggs, at room temperature

1 cup

baked, mashed sweet potato, at room temperature or slightly warmer (from about one 15-ounce sweet potato) (see instructions below)

1 tbsp

molasses

1 tbsp

finely grated fresh ginger

1/2 tsp

table salt

1/4 tsp

ground cinnamon

1/8 tsp

ground cardamom

1/4 tsp

freshly grated or ground nutmeg

7 1/2 oz

unbleached all-purpose flour; more for the pan

1 1/2 tsp

baking soda