Ensure avocado is ripe; if avocado is firm, ripen in a paper bag, 1-2 days; slice avocado

Preheat oven to 400° + lightly oil a small baking dish; chop cauliflower into 1-inch pieces + heat 1 tbsp oil in skillet over med-high; cook cauliflower + salt/pep 4-5 min; add 2 tbsp water, reduce heat, cover + steam 2-3 min til tender; set aside

Wipe mushrooms clean + thinly slice; heat 1 tbsp oil in skillet over high, add mushrooms + cook undisturbed 3 min; sauté 3-4 min til browned + tender, season with salt/pep

Add veggies to baking dish, top with 6 tbsp sauce + ¼ cup sour cream; bake 12-15 until hot; garnish with avocado + chopped cilantro