Gluten-Free Cinnamon Crumb Cake | Saveur

Ingredients

• 1 1⁄2 cups sorghum flour
• 1 cup packed brown sugar
• 1⁄2 cup almond meal
• 1⁄2 cup potato starch
• 2 tsp. ground cinnamon
• 1 1⁄2 tsp. xanthan gum
• 1 1⁄4 tsp. baking powder
• 1 tsp. baking soda
• 3⁄4 tsp. kosher salt
• 1 cup plain full-fat yogurt
• 1⁄2 cup canola oil
• 1 tbsp. vanilla extract
• 3 eggs
• 1⁄2 cup sorghum flour
• 1⁄2 cup packed brown sugar
• 1⁄2 cup walnut pieces, lightly toasted
• 1 tsp. ground cinnamon
• 1⁄4 tsp. kosher salt
• 4 tbsp. unsalted butter, cubed and chilled