Preheat your oven to 350°F / 175°C. Thoroughly grease a baking dish with oil or butter.
Gently lay the roasted poblano peppers side by side in the prepared baking dish.
Make sure the slit in each pepper is facing up.
Stuff each pepper generously with the grated Monterey Jack cheese.
In a separate bowl, crack the eggs.
Add the milk, cumin, salt, and pepper.
Whisk the egg mixture vigorously with a fork or whisk until it is smooth and slightly frothy.
Carefully pour the egg batter evenly over the stuffed peppers in the dish.
Bake uncovered for 25-30 minutes, or until the egg mixture is puffed, golden brown, and fully set in the center.
Let cool for a few minutes before serving.
Serves 5-6.