Blueberry Cream Cheese Coffeecake

• 3 picked over blueberries
• 2 stick butter softened (unsalted)
• 2 eggs
• 1 filling
• 1 egg
• 575 gr flour
• 525 gr sugar
• 240 ml milk
• 350 ml cream cheese softened
• 16 ml lemon juice (fresh)