Gather the ingredients so that you have everything close at hand on the counter or table.
In a medium saucepan, combine the can of tomato soup, vegetable oil, granulated sugar, white corn syrup, and red wine vinegar. Whisk to combine.
Next, add the seasonings to the dressing. Add in dried minced onion, minced garlic, prepared horseradish, yellow mustard, paprika, seasoned salt, and freshly ground black pepper. Stir to combine.
Place saucepan over medium heat and bring mixture to a boil. Reduce heat and continue to lightly boil for 2-3 minutes, stirring occasionally.
Remove from heat and allow to cool. Once cool, transfer dressing to a glass cruet bottle or pint jar. Cover with a lid and refrigerate for at least 8 hours before using to allow the ingredients to meld.
Use with your favorite green salad. Store in refrigerator for up to 4 weeks. This recipe will make 14 oz and will serve approximately 4-6 people.