Best Oreo Brownies Recipe

Name: Best Oreo Brownies Recipe
Prep time: 15 min
Cook time: 40 min
Total time: 55 min
Cuisine: American
Ingredients: 1 cup butter (2 sticks, unsalted); 2 cups granulated sugar; ½ cup semisweet chocolate (chips, baking chocolate, or your favorite); 3 large eggs (at room temperature); ⅓ cup unsweetened cocoa powder; ⅓ cup Hershey's special dark cocoa powder; 2 teaspoons pure vanilla extract; 1 cup all-purpose flour; ½ teaspoon salt; 12 regular Oreos (crushed); ½ cup butter (unsalted, room temperature); ⅓ cup Crisco shortening; 1 teaspoon pure vanilla extract; 2 cups powdered sugar (aka confectioners) (sifted then measured); 1 or 2 tablespoons heavy whipping cream