Watermelon and Tomato Salad

Ingredients (10)

• 0.33 cup red onion thinly sliced
• 0.5 cup fresh basil sliced
• 2 cup seedless watermelon cut into 1/2-inch cubes
• 3 large tomato(es) chopped into 1/2 inch cubes
• 1.5 tbsp sherry vinegar
• 0.25 tsp salt
• 2 tbsp olive oil
• 0.25 tsp black pepper
• 0.25 tsp chili powder
• 2 tbsp fresh chives minced