1. Cook sweet potatoes in 3 Tbsp. of the oil in large skillet on medium heat 6 minutes. Stir in ham and onion. Cook 10 minutes. Stir in mustard and horseradish. Cook 2 minutes.
2. Fry eggs in remaining 1 Tbsp. oil in large skillet to desired degree of doneness.
3. Divide sweet potato mixture evenly between 4 plates. Top each with a fried egg and sprig of thyme and serve.
Nutritional information per serving: Calories 463; Total Fat 29g; Saturated Fat 7g;