Kale and Goat Cheese Frittata

Bahan-bahan (4 porsi)

• 4 tablespoons refined coconut oil, (divided)
• 1 medium yellow onion, (sliced)
• 1¼ teaspoons sea salt, (divided)
• 4 ounces kale, (stemmed and cut into thin ribbons)
• 8 large eggs
• ¼ cup crumbled goat cheese
• ½ teaspoon freshly ground black pepper