Preheat your Ooni Pizza Oven for at least 30 minutes, I like to heat the center of the oven deck to around 850f before loading this style of pizza.
Begin building the pizza by adding the fresh mozzarella, sliced garlic, and walnuts.
Top with roasted Brussels sprouts followed by the diced apple. Scatter any reserved Brussels sprouts leaves over the pizza. Season with salt and pepper.
Bake in your Ooni pizza oven till fully baked and nicely colored (I aim for a 3-4 minute bake for a more crispy bottom) Watch the video for the real time bake!