Pesto Mayonnaise

Ingredients

• 13 cup basil leaves, lightly packed
• 13 cup spinach leaves, lightly packed
• 2 tablespoons grated parmesan cheese
• 1 tablespoon pecans (or pine nuts or walnuts)
• 2 tablespoons lemon juice
• 2 tablespoons olive oil
• 2 garlic cloves, mashed
• salt and pepper, to taste
• 1 12 cups prepared mayonnaise (may use low fat)
• 1 -2 tablespoon prepared horseradish (optional)
• 2 tablespoons sun-dried tomatoes