Leftover Mashed Potato Cheesy Vegetarian Hash - Make the best use of your leftover mashed potatoes by adding crispy cheese, roasted veggies, and a fried egg! This is my favorite hot breakfast ever!
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Leftover Mashed Potato Cheesy Vegetarian Hash

This cheesy hash is the best way to use up leftover mashed potatoes, especially when topped with a runny fried egg!
Course Breakfast
Cuisine American
Prep Time 5 minutes
Cook Time 15 minutes
Total Time 20 minutes
Servings 1
Calories 225kcal
Author Lindsay Moe

Ingredients

  • 1 tablespoon olive oil
  • 1 small onion
  • Coarse kosher salt and freshly ground black pepper
  • 1 handful of leafy greens such as spinach
  • About 1 cup leftover mashed potatoes
  • 1 handful cheese such as gruyere, mozzarella, feta, or Monterey jack
  • 1 fried egg optional

Instructions

  • Heat olive oil in a medium pan over medium heat. Add the onion and season with salt and pepper. Cook, stirring frequently, until the onion is beginning to soften, 5-7 minutes.
  • Add a handful of leafy greens and stir until wilted, usually less than one minute.
  • Add the mashed potatoes and break up into an even layer if cold. Allow to cook until heated through, scraping the bottom of the pan and flipping every few minutes.
  • Add the cheese and continue to cook, breaking up, scraping, and flipping the potatoes every few minutes, until the potatoes and cheese have formed a brown crust throughout. Transfer to a plate, season with salt and pepper and top with a fried egg if desired.

Notes

Ideas to customize this leftover mashed potato cheesy vegetarian hash:
  • Use any vegetables you have on hand such as roasted garlic, cooked broccoli, cauliflower, peppers, or kale
  • Use any cheese you like such as cheddar, gorgonzola, or an Italian blend
  • Mix and match for different flavor profiles. Go Mexican with cheddar, peppers, and a bit of salsa, or Greek with feta, roasted peppers, spinach, and olives.
  • Serve alongside your favorite eggs
  • Serve with sausage links or add crumbled bacon for a non-vegetarian option
  • Top with a drizzle of sriracha or a few dashes of hot sauce
 

Nutrition

Calories: 225kcal | Carbohydrates: 7g | Protein: 7g | Fat: 18g | Saturated Fat: 3g | Cholesterol: 164mg | Sodium: 95mg | Potassium: 330mg | Fiber: 1g | Sugar: 3g | Vitamin A: 3050IU | Vitamin C: 13.6mg | Calcium: 70mg | Iron: 1.6mg