Preheat your oven to 350°F (175°C) and grease a 9-inch pie dish with butter or cooking spray.

Melt 2 tablespoons of butter over medium heat in a medium skillet, then sauté the chopped yellow onion until translucent and fragrant, about 5 minutes.

Add minced garlic and cook for an additional minute until fragrant, then toss in corn kernels and sauté for another 2-3 minutes.

In a large bowl, whisk together 3 eggs, 1 cup of milk, and a pinch of salt and pepper until smooth and frothy.

Fold the cooled corn mixture into the egg mixture along with 1 cup of shredded cheddar cheese.

Pour the combined mixture into the prepared pie dish, spreading evenly with a spatula.

Bake in the preheated oven for 35-40 minutes, until the edges are golden and a knife inserted in the center comes out clean.

Allow the pie to cool for about 10 minutes before serving warm.