Place all the ingredients in a blender and blend until a thick batter is just formed.
Melt the butter in a large cast iron skillet or griddle, over medium heat.
Keeping the skillet at medium heat, ladle about ¼ cup of the batter onto the skillet, to make an arepa.
Cook, until the undersides are golden brown, about 2 minutes. Flip with a spatula and cook about 2 minutes more on the second side.
If you want to finish in the oven: Cook, until the undersides are golden brown, about 2 minutes. Place pan into oven and broil for 3 to 4 minutes, until lightly brown.
Serve immediately or transfer to a platter and cover loosely with foil to keep warm. Repeat with the remaining batter, adding more butter to the skillet as needed. Serve with butter and white cheese on top.