- Preheat your oven to 190°C (375°F) and lightly grease your mini muffin tin. 
- In a bowl, whisk together the eggs, heavy cream, salt, and pepper until the mixture is smooth and slightly frothy. 
- Chop your choice of fillings—ham, spinach, mushrooms—and evenly distribute them into each muffin cup. 
- Sprinkle grated cheese and chopped herbs over the fillings in each cup, adding as much as you like for flavor. 
- Pour the egg mixture into each muffin cup, filling about three-quarters full to prevent spillover. 
- Place the muffin tin in the oven and bake for 15-20 minutes, until the edges are golden brown and the centers are just set with a slight puff. 
- Remove from the oven and let the quiche bites cool in the tin for about 5 minutes, then transfer them to a cooling rack to cool completely. 
- Once cooled, serve the mini quiche bites warm or at room temperature, enjoying their tender, cheesy texture and savory flavors.