Peanut Butter Cake

Name: Peanut Butter Cake
Prep time: 30 min
Cook time: 1 h
Total time: 1 h 30 min
Cuisine: American
Ingredients: 114 g Unsalted butter (room temperature); 100 g Granulated sugar; 100 g Brown sugar; 2 Eggs (room temperature); 130 g Peanut Butter (smooth); 240 g Whole milk (room temperature); 1 teaspoon Vanilla extract; 240 g All-purpose flour; 1 teaspoon Baking powder; 1 teaspoon Baking soda; ½ teaspoon Salt; 225 g Cream cheese (full fat (33%+) eg. Philadelphia - no need to bring it to room temp.); 75 g Mascarpone (full fat (41%+) - no need to bring it to room temp.); 45 g Powdered sugar (sifted); 75 g Peanut butter (smooth); ½ teaspoon Vanilla extract