Homemade Impossible Burger

Ingredients

• 6 tablespoons Country Crock® Plant Butter Sticks with Avocado Oil, divided
• 1 small onion, chopped
• 1/2 teaspoon salt
• 2 cups sliced cremini mushrooms
• 3 large cloves garlic, chopped
• 1 8 ounce package seitan
• 1 1/2 cups cooked brown rice
• 1 small raw beet, grated, about 3 tablespoons
• 1/3 cup oat flour * or potato starch
• 1 tablespoon nutritional yeast
• 1 tablespoon steak sauce
• 1 tablespoon soy sauce or liquid aminos
• 1/2 teaspoon black pepper
• 1/2 teaspoon liquid smoke