01 - Preheat the oven to 350°F. Generously grease a 6-cup muffin tin with olive oil or melted butter.
02 - Whisk eggs, milk or cream, salt and black pepper in a mixing bowl until well blended.
03 - Fold in shredded cheese, chopped smoked salmon, shallot or red onion, spinach, and dill until evenly combined.
04 - Divide mixture equally among prepared muffin cups, filling each about three-quarters full.
05 - Bake for 18 to 20 minutes, until set and lightly golden on top.
06 - Allow to cool for five minutes, then carefully run a knife around edges and release muffins from the tin.
07 - Garnish with additional fresh dill if desired. Serve warm or at room temperature.