Tennessee Onion Recipe

This Tennessee Onions recipe is a true gem. It's incredibly simple to make, requiring minimal prep work and just a handful of ingredients. Yet, the combination of sweet, caramelized onions and a rich, cheesy topping creates a side dish that's both comforting and flavorful.
Perfect for busy weeknights or potlucks, Tennessee Onions are a crowd-pleaser. They pair beautifully with grilled meats, roasted chicken, or even as a vegetarian main course. The best part? This recipe is totally customizable! Feel free to experiment with different cheese combinations, add a pinch of cayenne pepper for a kick, or incorporate your favorite herbs and spices.

Ingredients

• 3 large sweet onions (Vidalia recommended)
• 4 tablespoons butter, sliced
• 1 teaspoon dried thyme
• 1 teaspoon dried parsley flakes
• 1 teaspoon garlic salt
• ½ teaspoon dried oregano
• ¼ teaspoon dry mustard
• ¼ teaspoon cayenne pepper (optional)
• 1 cup shredded cheddar cheese
• 1 cup shredded smoked Gouda cheese (or any cheese you like)
• Cooking spray

Directions

1. Preheat your oven to 350°F (175°C). Lightly grease a 9x13 inch baking dish with cooking spray.
2. In a large bowl, toss the thinly sliced onions with the thyme, parsley, garlic salt, oregano, mustard powder, and cayenne pepper (if using).
3. Arrange the seasoned onions evenly in the prepared baking dish. Dot the top with butter slices and sprinkle with the cheddar and gouda cheese.
4. Bake uncovered for 30-35 minutes, or until the onions are tender and the cheese is melted and bubbly on top.
5. Tips:
6. For extra crispy edges, broil the casserole for the last few minutes of cooking.
7. Leftovers can be stored in an airtight container in the refrigerator for up to 3 days. Reheat gently in the oven or microwave.
8. Want to add a protein element? Cook crumbled bacon or sausage and sprinkle it over the onions before adding the cheese.