Pre-heat oven to 375 degrees F. Place your pie crust on a baking sheet and bake for 10 minutes.
Place butter in a nonstick pan on medium-high heat. Add in the kale, onion, and broccoli. Sauté for 4-5 minutes till veggies are tender and fragrant. Turn off heat and allow to cool slightly.
In medium sized bowl add the eggs and milk and whisk till combined. Season with salt and pepper. Gently stir in the veggies and cheese.
Pour filling over your partially baked pie crust an bake for 35-40 minutes. Serve warm and enjoy!