3 eggs
½ cup milk
½ cup flour
1 Tbsp sugar
pinch salt
ground cinnamon, or other flavorings to taste
2-4 Tbsp butter
Place oven rack on the middle rack of your oven and place a cast-iron skillet in the oven. Preheat oven to 450F. Let the pan warm up in the oven for longer than it takes just to preheat oven, to make sure it's hot enough.
Make sure your ingredients aren't fridge-cold! In a bowl, beat the eggs thoroughly with electric beaters until light and frothy; add milk, flour, and seasonings and just mix.
Remove the hot skillet from the oven; add the warmed butter, tilting the pan to coat the skillet. Pour the prepared batter into the hot skillet, all at once, and immediately return the skillet to the oven. Bake 20 to 25 minutes or until puffed and brown. Serve with lemon juice and powdered sugar, or honey, maple syrup, jam, etc.
