pumpkin bread with chai crumble

Ingredients

• 3 ¼ cups flour
• 2 teaspoons ground cinnamon
• ½ teaspoon ground cardamom
• ½ teaspoon ground nutmeg
• ½ teaspoon ground ginger
• 2 teaspoons baking soda
• 2 teaspoons salt
• 1 ¾ cups (one 15-ounce can) pumpkin puree
• 1 cup vegetable oil (or butter)
• 3 cups sugar
• 4 eggs
• 1 teaspoon vanilla extract
• 2/3 cup water, at room temperature
• 3 cups flour
• 2 ½ teaspoons ground cinnamon
• 1 teaspoon ground cardamom
• 1 teaspoon ground allspice
• 1 teaspoon ground cloves
• ¼ teaspoon salt
• 1/8 teaspoon ground black pepper
• 1 ½ cups light brown sugar, packed
• 1 ½ cups (2 ½ sticks) butter, melted