Preheat your oven to 425°F (220°C) and place your [cast-iron skillet] inside to get scorching hot. My Olivia always presses her nose to the oven door waiting for the “magic puff” to start.
In a separate pan, cook the [bacon] until crispy. Let it drain on paper towels, then crumble. Olivia’s job is quality control… and somehow bacon always goes missing.
Blend together the [eggs], [milk], [flour], [salt], and [black pepper] until silky smooth. Olivia loves watching it swirl like a milkshake.
Carefully remove the hot skillet and add the [butter]. Swirl it around quickly as it bubbles and coats the pan, this is where that crispy golden base begins.
Immediately pour the batter into the hot skillet. Sprinkle evenly with [cheddar cheese] and [bacon]. Olivia always adds “just one more pinch” of cheese for luck.
Bake for 18–22 minutes until dramatically puffed and golden brown. Do not open the oven door, trust me, we learned that lesson the hard way.
Top with fresh [chives], slice into wedges, and serve immediately. It will gently deflate, but the flavor only gets better.