Gluten Free Apple Date Coffee Cake

• unsalted butter, to grease

All-Purpose Gluten Free Flour

• 7 oz white quinoa
• 3 ½ oz chia seeds
• 10 ½ oz corn starch

Streusel

• 4 oz brown sugar
• 2 tbsp unsalted butter
• 1 tsp ground cinnamon
• ¼ tsp salt
• 1 pinch ground ginger
• 1 pinch ground nutmeg
• 1 oz chopped pecans, (optional)

Cake

• 3 oz dates, pitted
• 8 oz dessert apples, quartered
• 6 oz plain yogurt, unsweetened
• 2 oz vegetable oil
• 3 oz brown sugar
• 1 tsp vanilla extract
• 2 large eggs
• ½ tsp xanthan gum
• 1 tsp baking powder
• ½ tsp baking soda
• ½ tsp salt
• 1 pinch ground nutmeg