- Preheat oven to 350ºF and lightly grease a 9-inch round pie pan with butter. Combine Panko, almond flour, 1 egg, ½ cup melted butter, and sea salt in a medium mixing bowl and stir well to moisten. Pour into pan and press firmly to take the shape of pan bottom and sides. Bake 10 minutes. Cool crust for 10 minutes.
- While the crust cools, heat olive oil in a medium pan over medium heat. Add onion and butternut squash. Cook for 10 minutes, stirring occasionally. Add kale to pan and stir. Cover and continue to cook 1 minute longer to wilt kale. Remove from heat and uncover. Cool mixture for 5 minutes.
- Whisk remaining eggs, milk, thyme and remaining sea salt together in a large mixing bowl. Stir in cooked vegetable mixture, gruyere and bacon. Pour mixture into crust. Bake for 45-55 minutes, until center of quiche is set. Cool at room temperature for 10 minutes before slicing.