Preheat the oven to 375?. In a large skillet, heat the butter until melted and slightly frothy.

Add the onion and saut? until fragrant and beginning to turn translucent, about 2-3 minutes.

Add the cabbage and combine with onions. Season with salt. Cook for about 5-6 minutes or until the cabbage has softened and is beginning to turn lightly golden in spots.

Stir in the garlic and cook for about a minute. Remove from heat and let the mixture cool slightly.

Add the frozen hash browns and 1? cups of cheese and mix until well-combined. Smooth the top with a spatula.

Bake in the preheated oven for about 30-35 minutes or until the top begins to turn golden brown.

Add the remaining cheese to the top and bake for another 4-5 minutes until the cheese is melted and bubbly.

Remove from oven and top with chopped green onion before serving.