In a large mixing bowl, combine 1 cup of shredded sharp cheddar cheese, 1 cup of shredded Monterey Jack cheese, and 1/2 cup of crumbled bacon (if using). Add 1 cup of diced pickled jalapeños to the mixture, ensuring even distribution of ingredients.

In a separate bowl, whisk together 1 cup of evaporated milk, 1 cup of all-purpose flour, and 2 beaten eggs until the mixture is smooth and free of lumps.

Pour the wet mixture into your bowl of dry ingredients, stirring gently until a thick batter forms.

Preheat your oven to 350°F (175°C) and grease a 9x13-inch baking dish. Pour the thick batter into the prepared dish.

Place the baking dish in the preheated oven and bake for 35-40 minutes, or until the top is golden brown.

After baking, remove the dish from the oven and let it cool for about 10 minutes before cutting.