- 6 green tomatoes, cut into 1-inch cubes
- 3 stalks celery, cut into 1/2-inch pieces
- 16 green onions (white and pale green parts only), chopped
- 1 bunch cilantro, chopped
- 5 tablespoons soy sauce
- 1/4 cup olive oil
- 1 tablespoon brown sugar
- 1 tablespoon apple cider vinegar
- 1/2 teaspoon ground black pepper
- 1/2 teaspoon salt
- 1/2 teaspoon red pepper flakes
- Preheat oven to 350 degrees F (175 degrees C).
- Mix green tomatoes, celery, green onions, and cilantro together in a 2-quart casserole dish. Whisk soy sauce, olive oil, brown sugar, vinegar, black pepper, salt, and red pepper flakes together in a bowl; pour over vegetable mixture. Toss to coat.
- Bake in the preheated oven until vegetables are tender, about 45 minutes; stir about 20 minutes into cooking to redistribute sauce.