Step 1

Preheat oven to 450 F.

Step 2

Place cauliflower florets in the bowl of a food processor with the blade attached. Pulse until completely crumbled. Pour into a microwave safe, medium-sized bowl and microwave on high for 5 minutes. Let cool slightly. Place cauliflower in a small kitchen towel or cheese cloth and ring out all the excess liquid.

Step 3

Transfer cauliflower to a clean mixing bowl and add Parmesan, salt, and garlic powder. Stir until combined. Add slightly beaten egg to bowl and mix thoroughly.

Step 4

Spray a 9-inch round tart pan or 9-inch pie dish with nonstick spray. Pour in cauliflower mixture. Use your hands to mold the cauliflower to the pan, making sure to press firmly on the bottom and up the sides to form an even layer.

Step 5

Bake for 10 minutes. Then, remove from oven and lower oven temperature to 400 F.

Step 6

In a large mixing bowl, combine eggs, milk (or heavy cream), salt and pepper and whisk thoroughly. Set aside.

Step 7

Heat olive oil in a small skillet over medium-high heat. Add spinach and cook until just wilted, stirring often, about 2-3 minutes.

Step 8

Remove spinach from heat and add it to the egg mixture, along with the scallions and feta. Mix to combine, then pour into the cauliflower crust. Bake for 15-20 minutes.

Step 9

Let cool and serve topped with additional feta or grated Parmesan cheese.