Cheesy Onion Casserole
Indulge in the comforting flavors of this Cheesy Onion Casserole, a rich and savory dish that combines golden caramelized onions, a duo of melty mozzarella and cheddar cheese, and crisp slices of baguette for a texture-packed delight. Perfectly baked until bubbly and golden, this casserole layers the sweet depth of slow-cooked onions with cheesy, toasted goodness, making it an irresistible side dish or a star-worthy vegetarian main course. A splash of broth elevates the flavors, while a sprinkle of Parmesan and fresh parsley adds a delightful finishing touch. With its easy prep and irresistible aroma, this dish is destined to become a family favorite and the ultimate crowd-pleaser at any gathering. Keywords: cheesy onion casserole, easy casserole recipe, caramelized onion recipe, comfort food, cheesy bake.
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Recipe Information
Ingredients
- 4 tablespoons Butter
- 4 large Yellow onions
- 0.5 teaspoons Salt
- 0.25 teaspoons Black pepper
- 2 cloves Garlic, minced
- 1 cup Vegetable or chicken broth
- 1.5 cups Shredded mozzarella cheese
- 1.5 cups Shredded cheddar cheese
- 1 loaf Day-old baguette, thinly sliced
- 0.5 cups Parmesan cheese, grated
- 2 tablespoons Fresh parsley, chopped (optional)
Instructions
Preheat your oven to 375°F (190°C).
Peel and slice the yellow onions thinly into half-moons.
Melt the butter in a large skillet over medium heat. Add the sliced onions, salt, and pepper, and cook for 20-25 minutes, stirring occasionally, until the onions are golden brown and caramelized.
Add the minced garlic to the skillet and cook for 1-2 minutes until fragrant. Then pour in the broth, stir well, and simmer for 3-5 minutes until slightly reduced.
In a 9x13-inch baking dish, spread half of the caramelized onion mixture evenly along the bottom.
Sprinkle half of the shredded mozzarella and half of the cheddar cheese over the onions.
Arrange a single layer of baguette slices on top of the cheese layer.
Spread the remaining caramelized onions over the bread slices, followed by the remaining mozzarella and cheddar cheese.
Top the casserole with the grated Parmesan cheese for extra flavor.
Cover the baking dish with aluminum foil and bake in the preheated oven for 20 minutes.
Remove the foil and bake for an additional 15 minutes, or until the top is golden and bubbly.
Remove from the oven and let the casserole rest for 5-10 minutes before serving. Garnish with freshly chopped parsley, if desired.
Nutrition Facts
Calories |
452 | ||
|---|---|---|---|
% Daily Value* |
|||
| Total Fat | 25.7 g | 33% | |
| Saturated Fat | 15.9 g | 80% | |
| Polyunsaturated Fat | 0.0 g | ||
| Cholesterol | 78 mg | 26% | |
| Sodium | 1061 mg | 46% | |
| Total Carbohydrate | 32.9 g | 12% | |
| Dietary Fiber | 3.3 g | 12% | |
| Total Sugars | 5.9 g | ||
| Protein | 22.3 g | 45% | |
| Vitamin D | 0.1 mcg | 1% | |
| Calcium | 525 mg | 40% | |
| Iron | 1.0 mg | 6% | |
| Potassium | 222 mg | 5% | |
*The % Daily Value tells you how much a nutrient in a serving of food contributes to a daily diet. 2,000 calories a day is used for general nutrition advice.
