Broccoli and Walnut Salad

Ingredients

• 3 cups broccoli florets, roughly chopped
• ½ medium head cauliflower, roughly chopped
• 1 cup raisins
• 3/4 cup chopped onions
• 1 small red bell pepper, seeded and thinly sliced
• 1/2 cup chopped walnuts
• 1/4 cup red wine vinegar
• 1/4 cup olive oil
• 6 to 12 large lettuce leaves
• 2 beefsteak tomatoes cut into wedges