Brazilian Pão de Queijo with Guava and Cream Cheese

Preheat oven to 375F. In a pot over medium-high heat, add in the milk, oil, and salt. Bring to just a simmer. In a large mixing bowl, add in the tapioca flour. Pour the hot milk mixture over the tapioca flour and stir until thick and glossy. Let rest 5–10 minutes. Mix in eggs one at a time until stretchy and smooth. Fold in the mozzarella. Scoop the dough into a muffin tin. Place a cube of guava paste and a cube of cream cheese in the center of each one, then seal into little balls. Bake for about 20 minutes, or until puffed up and lightly golden. Serve and enjoy immediately!