Blackberry Lemon Sweet Rolls

Name: Blackberry Lemon Sweet Rolls
Prep time: 30 min
Cook time: 35 min
Total time: 1 h 5 min
Cuisine: American
Ingredients: 1 packet instant yeast (2 ¼ tsp); 1/2 cup warm milk (approx. 110-115°F); 1 tsp lemon extract; 1 large egg (room temperature); 1 tbsp granulated sugar; zest of one lemon; 1 ½ cup all-purpose flour (192g plus more as needed); 1 tsp salt; 4 tbsp unsalted butter softened; cooking spray; 1 cup blackberries (fresh or frozen; thawed and drained); ¼ cup granulated sugar; 2 tsp corn starch; ½ tsp fresh lemon juice; 2 tbsp unsalted butter (softened); 2 tbsp light brown sugar (packed); 2 tbsp salted butter (room temperature); 4 oz cream cheese (room temperature); 2 tsp fresh lemon juice; 1 tsp lemon zest; 2 1/2 cups powdered sugar ((292g))