How to Make It
Heat a large skillet over medium-high heat. Add the oil and then stir in the onions. Cook for about 2 minutes or until the onions are soft.
Add the garlic and bell peppers; stirring occasionally, cook for 3 to 5 minutes, or until the peppers are softened.
Add the kale and stir in the Worcestershire sauce, balsamic vinegar and smoked paprika. Cook for 2 to 3 minutes or until the kale is softened. Season with salt and pepper.