Transfer 12 oz cauliflower florets to a microwave-safe bowl. Cover loosely and place into the microwave for 7 minutes.
Meanwhile, in a pan, heat 1 tablespoon of olive oil over a medium heat. Add 1 tbsp unsalted butter, 2 oz onion, and 6 oz brown mushrooms to the pan and stir fry for 2 minutes.
Add 10 oz ground beef, 1/4 tsp salt, 1/4 tsp ground black pepper, and 1/2 tsp Italian seasoning. Cook for another 3 minutes.
Blend the cauliflower.
Remove the cauliflower from the microwave and let cool completely. In the same bowl whisk together 3/4 cup all-purpose flour, 1/4 tsp baking soda, 0.25 oz parmesan, 1 tsp garlic powder, 1/2 tbsp olive oil, 1/4 tsp paprika, 1/4 tsp onion powder, and 1 medium egg with a spatula until well combined.
Line some parchment paper on the baking tray. Transfer the cauliflower pizza dough to the middle of the tray and flatten with a spatula until a thin pizza crust forms. Bake for 20 minutes at 430℉. Flip the crust and bake for another 10 minutes.
Top with 1/2 cup homemade tomato sauce, stir-fried beef, mushrooms, 3 oz mozzarella, 2 oz smoked sausage, 2 oz sliced cauliflower, and 2 tbsp basil.
Place into the oven and bake for 15 minutes.
Serve immediately.