Blackberry Oat Crunch Coffeecake is the best - Kitchen Wrangler | Melissa Guerra

Ingredients

• ¾ cup all-purpose flour (94g)
• ¼ cup brown sugar (50g)
• 2 tbsp. granulated sugar (30g)
• Pinch of salt
• 5 tbsp. melted butter (72g)
• ½ cup old fashioned rolled oats (45g)
• 16oz. fresh or frozen blackberries (500g)
• ¼ cup sugar (50g)
• 3 cups all-purpose flour (375g)
• 1 tbsp. baking powder (12g)
• ½ tsp. baking soda (3g)
• ½ tsp. salt (2g)
• 1 cup butter (230g)
• 1 cup sugar (200g)
• 1 tbsp. vanilla (15ml)
• 3 eggs
• 1 cup sour cream (240ml)
• ¼ cup powdered sugar (31g)
• 2-3 tsp. water (10-15ml)