Avocado Tuna Mousse

Ingredients (7)

• + 1 ¼ cups fat-free sour cream add to pantry
• + 3 tablespoons low-fat creamy salad dressing (such as Miracle Whip Light®) add to pantry
• ✓ 1 teaspoon sweet pickle relish
• + 2 teaspoons yellow mustard add to pantry
• + ⅛ teaspoon dried minced onion add to pantry
• + 2 (5 ounce) cans tuna in water, drained add to pantry
• + 2 avocados, cut into 1/4-inch dice add to pantry