Blueberry Avocado Muffins

Bahan-bahan (12 porsi)

• 2 cups all-purpose flour
• 2 tsp . baking powder
• 1/2 tsp . baking soda
• 1/2 tsp . salt
• 1/2 tsp . ground cinnamon (optional)
• 1 ripe avocado, seeded and peeled
• 3/4 cup sugar
• 1 tsp . vanilla extract
• 1 1/2 cups fresh blueberries
• 1 egg
• 1 cup Greek yogurt
• 2 Tbsp . melted butter, slightly cooled
• 2 Tbsp . all-purpose flour
• 2 Tbsp . granulated sugar
• 1/4 cup raw sugar