spinach orange salad with blue cheese

Ingredients

• 1 - package of baby spinach
• 2 - naval oranges, peeled and sectioned
• 1/2 - medium sweet onion
• 1/4 cup vegetable oil (start of dressing ingredients)
• 2 tablespoons red wine vinegar
• 1 teaspoon dijon mustard
• 1/2 teaspoon sugar
• 1/4 teaspoon salt
• 1/4 teaspoon pepper
• 1/4 teaspoon herb (oregano, tarragon)
• 2 ounces crumbled blue cheese