Preheat your oven to 375°F (190°C).
Slice a thin layer off the top of each bagel or gently press down in the center to create a cavity.
In a mixing bowl, whisk together the eggs and heavy cream. Season with salt and pepper to taste.
Stir in your chopped bacon, sautéed vegetables, and shredded cheese.
Spoon the quiche filling evenly into each prepared bagel cavity.
Place your stuffed bagels on a lined baking sheet and bake for about 15–18 minutes until the filling is set and slightly golden.
Let them cool for a few minutes before serving. Garnish with chopped chives if desired.