I often suggest making crustless quiches to people, here is one of the base recipes I have used.
10 Slices of Turkey Bacon, Cooked and chopped (I did a mix of crispy and chewy cooked)
1lb bag of frozen spinach thawed and squeezed of excess water (Take a tiny bit of a corner off thaw in the sink and squeeze water out the corner)
1/4 onion sliced very thin (mandolin helps)
6 large Eggs
3/4 cup Almond or Coconut Milk
8oz Shredded Dairy Free Cheese of Choice (I used Lisanatti Almond Cheddar)
1/2 tsp salt
1/2 tsp ground pepper
pinch of nutmeg
1. Preheat Oven to 350F And line a 8x8 Pan with Parchment paper
2. If not done cook and chop bacon, thinly slice the onions, and grate the cheese
3. Combine everything in one large bowl, mixing well, and scrape with a spatula into the pan.
4. Bake in the oven for 40 mins makes 4 extra large servings or 6 medium
You can make this in advance and reheat and eat for breakfast in the morning quick. This is a base recipe, feel free to add peppers or other seasonings to it. I did make this really simple and found it works without any advanced cooking like sauteing stuff prior (although that adds much better flavor)