Preheat the oven to 350 F. Grease a 9-inch pie dish.
Microwave the broccoli until tender, a few minutes, and drain on paper towels.
Microwave the bacon strips according to package instructions until they're crispy, about 5 minutes. I recommend microwaving them with paper towels to absorb the grease. Alternatively, pan fry them. When cool, crumble into small pieces.
Scatter about 1/3rd of the shredded cheese over the pie dish. Evenly distribute the broccoli on top.
Scatter another 1/3rd of the cheese. Evenly distribute crumbled bacon and scallions on top.
Scatter remaining 1/3rd of the cheese over the pie. In a bowl, beat together milk, eggs, basil, and pepper. Pour over the pie.
Decorate the top of the pie with sliced tomatoes.
Bake the pie at 350 F for 40 minutes. Let it cool for 15 minutes before cutting into it.