Set oven to 300 Fahrenheit, and heat a large, heavy skillet over medium heat. Add oil to the pan, and when it is hot, transfer a 1/4 cup of the mixture to the pan. Press down with the spatula to flatten. Repeat with more mounds. Cook on one side until golden brown, 4 to 5 minutes. Flip the pancakes over. Cook on the other side until golden brown, another 3 to 4 minutes. Transfer to a rack, set over a baking sheet, and place in the oven to keep warm.