Heat 1 tbsp oil in skillet over med-high; add broccoli, salt/pep + sauté 4-5 min; add ¼ cup water, cover + steam 3-5 min til tender; set aside

Heat lightly oiled skillet over med-high; pat sirloin dry, season with salt/pep + sear 2-3 min undisturbed til browned; flip over + sear 2-3 min more for med-rare (for more well done, increase cook time 1-2 min per side)

Pour contents of mashed cauliflower into a microwavable-safe dish + cover with a damp paper towel; cook high 1-2 min until hot; divide all to plates + top beef with 2-4 tbsp sauce