Pan-Fried Tofu Steaks with Creamy Mash

Ingredients

• 1 1/2 pounds extra-firm tofu (pressed, cut into 4 'steaks' (thick slices))
• 2 tablespoons cornstarch
• 1 teaspoon garlic powder
• 1 teaspoon onion powder
• 1 teaspoon paprika
• 1/2 teaspoon dried thyme
• 2 teaspoons salt (for mashed potatoes)
• 3/4 teaspoon black pepper (freshly ground, for mashed potatoes)
• 3 tablespoons vegetable oil
• 2 pounds russet potato (peeled, quartered)
• 1/2 cup milk (warmed)
• 1/4 cup unsalted butter
• 1 pound collard greens (tough stems removed, thinly sliced)
• 1 tablespoon olive oil (for greens)
• 1 clove garlic (minced, for greens)
• 1/2 cup vegetable broth (for greens)
• 1 tablespoon apple cider vinegar (for greens)