Summer Salad with Lemon Vinaigrette

Ingredients

• 1/4 cup lemon juice
• 1/4 cup olive oil
• 2 tablespoons balsamic vinegar
• 2 garlic cloves, minced
• 1 teaspoon salt
• 1 teaspoon grated lemon zest
• 1 teaspoon Dijon mustard
• 1/2 teaspoon pepper
• 2 packages (5-1/2 ounces each) torn mixed salad greens
• 1 medium red onion, sliced
• 2 cups sliced fresh mushrooms
• 2 cups fresh raspberries
• 1 cup chopped walnuts