When you cook condensed milk, the heat causes the sugar to caramelize and gives it a thicker, creamier consistency. The longer you cook it, the thicker and more caramelized it will get. This process is commonly used to make dulce de leche.u003cbr/u003eThis recipe delivers an exceptional batch of milk brownies that stand out for their rich chocolate flavor. Condensed milk makes this an easy brownie recipe and adds a slight caramelized flavor and fudgy texture.