For AP Option, preheat oven to 450 degrees F. Line a rimmed baking sheet with parchment paper.
Remove ends of both onions and peel them. Cut the onions into large wedges. Place them on the prepared baking sheet and bake for 20 to 30 minutes, until tender and browned. Note that you can leave them in wedges or thinly slice them as desired when you add them to the pizza. In the meantime, set aside.
For SP and AP Option, bring a pot of water to a boil. Add asparagus and boil for 2 to 3 minutes, until bright green. Remove to an ice water bath. Drain and pat dry with paper towels. Cut asparagus into 2-inch long pieces (or if you’d like to try making it decorative like mine, keep the head of broccoli whole, and carefully slice thin slices of the entire head).
In a medium bowl, combine ground beef, 1 Tbsp tomato paste, salt, pepper, red chile pepper flakes, lemon juice, oregano and basil until well combined.
Add the beef mixture to the baking sheet and flatten into a round, thin circle. Wrap a wooden rolling pin with parchment paper and gently roll out the meat. Try not to tear the meat.
Bake the crust for 10 minutes.
Remove baking sheet from oven. Use a paper towel to soak up the juices before flipping the crust.
Reduce temperature to 350 degrees F. Top the meatza crust with a thin layer of remaining tomato paste and roasted garlic. Sprinkle over chopped asparagus in an even layer. Bake for an additional 10 minutes.
Remove from oven. Top pizza with roasted onions. Serve immediately.