For easy release, silicone muffin cups work especially well for these keto sausage egg muffin bites. Make sure any sausage you use is sugar free to keep carbs low. You can swap the sausage for chopped bacon or ham, or change the cheese to your favorite keto-friendly variety like mozzarella or pepper jack. If you add other vegetables such as bell peppers or mushrooms, chop them small and sauté first to remove moisture and prevent soggy muffins. Store leftovers in the refrigerator for up to 4 days or freeze in a single layer before transferring to a container or bag. Reheat in the microwave for about 30 seconds or in a 350°F oven for 5 to 7 minutes until warmed through.