Vania s Green Pea Salad

1 tablespoon olive oil

1 small onion, chopped

1 small tomato, chopped

1 (15 ounce) can green peas, drained

1 ½ cups tomato sauce

1 ½ (5 ounce) cans tuna, drained

salt and ground black pepper to taste

Heat olive oil in a small saucepan over medium heat. Cook and stir onion in the hot oil until softened, 1 to 2 minutes. Stir tomato, peas, tomato sauce, and tuna into onion; continue cooking until warm, 3 to 4 minutes; season with salt and black pepper.