Blackberry Cream Cheese Crumb Cake - Recipe Tweets

Ingredients

• 1/2 cup unsalted butter
• 1 cup granulated sugar
• 2 large eggs
• 2 teaspoons pure vanilla extract
• 1/2 cup sour cream
• 1 1/3 cups all-purpose flour
• 1 teaspoon baking powder
• 1/4 teaspoon baking soda
• 1/4 teaspoon salt
• 1 heaping cup fresh blackberries
• 8 ounces cream cheese
• 1/3 cup packed brown sugar
• 1 1/2 teaspoons ground cinnamon
• 3 Tablespoons cold unsalted butter
• 3/4 cup confectioners' sugar
• 1 1/2 Tablespoons milk, cream, or lemon juice