Three Onion Casserole
Onions are a great source of antioxidants and have been used for centuries for their medicinal properties.
This is vegetarian and high protein recipe. Dish can be prepared in 70 minutes. Recipe requires some culinary experience (medium difficulty). Number of ingredients: 12.
Three Onion Casserole
Ingredients
Instructions
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Preheat the oven to 375°F (190°C).
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Slice the yellow onion, red onion, and leek.
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Heat olive oil in a large skillet over medium heat. Add the sliced onions, leek, garlic, thyme, salt, and black pepper. Cook until the onions are caramelized, about 15 minutes.
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In a separate bowl, whisk together the eggs and milk.
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Grease a casserole dish and layer half of the caramelized onions. Sprinkle half of the cheddar cheese on top.
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Pour the egg mixture over the onions and cheese.
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Layer the remaining caramelized onions on top and sprinkle with the remaining cheddar cheese.
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Top with bread crumbs.
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Bake in the preheated oven for 25-30 minutes, or until the casserole is set and the top is golden brown.
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Let it rest for 10 minutes before serving.
Nutrition Facts
Servings 6
- Amount Per Serving
- Calories 350kcal
- % Daily Value *
- Total Fat 15g24%
- Total Carbohydrate 45g15%
- Sugars 8g
- Protein 10g20%
* The Percentage Daily Values are calculated from a 2,000 calorie diet. Your specific daily value may vary, depending on your individual calorie requirements.
