Banana Bread with Cinnamon Streusel

Name: Banana Bread with Cinnamon Streusel
Ingredients: Banana Bread Batter; 1/2 cup brown sugar, lightly packed (70g); 1/4 cup granulated sugar (50g); 1/4 cup vegetable oil (50g); 1/3 cup plain yogurt (70g); 2 large eggs (100g); 4 medium bananas, mashed; 1/2 teaspoon vanilla extract (2g); 2 cups all purpose flour (250g); 1 teaspoon baking soda (4g); 1 teaspoon baking powder (4g); 1/2 teaspoon salt (4g); 1/2 teaspoon cinnamon (3g); 1/2 cup walnuts or pecans, toasted and coarsely chopped (optional); Cinnamon Streusel; 1/2 cup all purpose flour (63g); 1/4 cup brown sugar, lightly packed (35g); 1/8 teaspoon salt (2g); 1/4 cup unsalted butter, softened (57g)