Queso Cornbread Lava Cakes

Name: Queso Cornbread Lava Cakes
Ingredients: 6 ounces processed cheese, such as Velveeta, at room temperature; 2 ounces cream cheese, at room temperature; 2 tablespoons unsalted butter, at room temperature, plus more for serving; 2 canned chipotles in adobo; Nonstick cooking spray, for the ramekins; 1 cup all-purpose flour, plus more for dusting (see Cook's Note); 1/2 cup white cornmeal; 1 teaspoon sugar; 1/2 teaspoon baking powder; 1/2 teaspoon kosher salt; 3/4 cup milk; 1/4 cup vegetable oil; 1 large egg