Preheat oven to 375° and spray a popover (or muffin) tin with non-stick or oil spray. Add dry ingredients into a large mixing bowl, stir with a wooden spoon or whisk to combine. Stir in shredded cheddar cheese until coated and combined.
With a wooden spoon, slowly pour in beer, it will foam up, so stir a little, pour a little, until the mixture is a sticky, gooey, mess, incorporating all dry ingredients.
Mix in most of the melted butter, leaving 2-3 tablespoons for brushing tops of beer popovers. Using a large cookie scoop, scoop cheddar beer bread mixture into each popover hole. Brush tops of popovers with the leftover melted butter and if desired a sprinkle of kosher or flaky sea salt.
Bake at 375° for 15-20 minutes until toothpick inserted comes out clean. If making in muffin tin, check at 15 minutes and add time accordingly.