Ingredients
– 2½ pounds sweet onions, cut into ½-inch slices
– 1 teaspoon dried thyme
– 1 teaspoon dried parsley
– 1 teaspoon garlic salt
– ½ teaspoon dried oregano
– ½ teaspoon dry mustard
– ¼ teaspoon cayenne pepper (adjustable up to ½ teaspoon based on heat preference)
– ¼ cup salted butter, cut into pieces
– 4 ounces mild cheddar cheese, shredded
– 4 ounces smoked Gouda cheese, shredded
Instructions
1- Preheat the oven to 350 degrees Fahrenheit and coat a 9×13-inch baking dish with cooking spray.
2- In a shallow bowl, combine the dried thyme, dried parsley, garlic salt, dried oregano, cayenne pepper, and dry mustard.
3- Arrange half of the sliced onions evenly in the prepared baking dish, then sprinkle with half of the seasoning mixture, add half of the butter pieces, and top with half of the cheddar and Gouda cheeses.
4- Repeat the layering with the remaining onions, seasoning mixture, butter, and cheese to build a second layer.
5- Cover the dish with aluminum foil and bake for about 40 minutes, until the onions are soft and the sides are bubbly.
6- Remove the foil and bake for an additional 15 to 30 minutes, until the top turns golden and crispy.
7- Serve warm as a savory side dish that adds a flavorful touch to any meal.
Last Step:
Please leave a rating and comment letting us know how you liked this recipe! This helps our business to thrive and continue providing free, high-quality recipes for you.Notes
🔪 Use a mandoline slicer for uniform ½-inch onion slices quickly.
🍞 Add a crunchy topping by sprinkling breadcrumbs over the cheese after baking.
🧀 Experiment with cheeses like mozzarella, sharp cheddar, and Parmesan for varied flavors.
🕒 Prep ahead by refrigerating covered and bring to room temperature before baking.
❄️ Store leftovers in an airtight container in the fridge up to three days; freezing is not recommended.
- Prep Time: 10 minutes
- Cook Time: 55 minutes
- Category: Side Dish
- Method: Baking
- Cuisine: Southern
Nutrition
- Serving Size: 1 serving
- Calories: 165
- Sugar: 6 g
- Sodium: 445 mg
- Fat: 12 g
- Saturated Fat: 7 g
- Trans Fat: 0.2 g
- Carbohydrates: 9 g
- Fiber: 1 g
- Protein: 6 g
- Cholesterol: 36 mg