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Tennessee Onions

Thick slices of sweet onions seasoned with herbs, dotted with butter, and baked under a bubbling blanket of three melted cheeses.

50 minEasyServes 6285 cal/serving

AmericanSideOvenVegetarianStandardLow CarbGluten-FreeNut-FreeEgg-FreeSoy-FreeShellfish-FreeSesame-FreePork-FreeAlcohol-Free

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Ingredients

  • 3 large Vidalia or sweet onions, sliced into rings
  • 4 tbsp unsalted butter, cut into pats
  • 1 tsp garlic powder
  • 1 tsp dried oregano
  • 1/2 tsp dried thyme
  • 1/2 tsp kosher salt
  • 1/2 tsp freshly ground black pepper
  • 1/4 tsp cayenne pepper
  • 1 cup sharp cheddar cheese, shredded
  • 1 cup Monterey Jack cheese, shredded
  • 1/2 cup Parmesan cheese, grated
  • 2 tbsp fresh flat-leaf parsley, minced

Instructions

  1. 1

    Preheat the oven to 375 degrees F and lightly grease a 9x13-inch baking dish.

  2. 2

    Arrange 3 large sliced into rings Vidalia or sweet onions in overlapping, even layers across the bottom of the prepared dish.

  3. 3

    In a small ramekin, mix together 1 tsp garlic powder, 1 tsp dried oregano, 1/2 tsp dried thyme, 1/2 tsp kosher salt, 1/2 tsp freshly ground black pepper, and 1/4 tsp cayenne pepper.

  4. 4

    Sprinkle the seasoning mixture evenly over the onions, then distribute 4 tbsp cut into pats unsalted butter across the top.

  5. 5

    Combine 1 cup shredded sharp cheddar cheese, 1 cup shredded Monterey Jack cheese, and 1/2 cup grated Parmesan cheese in a bowl, then scatter the cheese mixture evenly over the onions.

  6. 6

    Bake uncovered for 30 to 35 minutes until the onions are tender and the cheese is melted, bubbly, and golden brown.

  7. 7

    Remove from the oven, garnish with 2 tbsp minced fresh flat-leaf parsley, and let rest for 5 minutes before serving warm.

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Questions

What is Tennessee Onions?

Thick slices of sweet onions seasoned with herbs, dotted with butter, and baked under a bubbling blanket of three melted cheeses. This reference files it under American side: made in the oven, rated easy and about 50 minutes start to finish.

What temperature do I cook Tennessee Onions at?

For Tennessee Onions, the oven is set to 375 F (about 190 C) in step 1. The longest stretch at that heat is 35 minutes, in step 6.

Can I make Tennessee Onions less spicy?

Yes. The heat in Tennessee Onions comes from 1/4 tsp cayenne pepper. For a milder plate, halve the cayenne; nothing else in the method changes.

Can I make Tennessee Onions dairy-free?

Not cleanly. Here the dairy (4 tbsp unsalted butter, cut into pats, 1 cup sharp cheddar cheese, shredded, 1 cup Monterey Jack cheese, shredded, 1/2 cup Parmesan cheese, grated) is the backbone of the dish, and plant-based substitutes change both its texture and its flavor. If you need strictly dairy-free, start from the dairy-free side collection instead.

Is Tennessee Onions keto-friendly?

A serving of Tennessee Onions carries 12 g of carbohydrate, 2 g of it fiber. Against a strict 20 g keto day that is 60 percent of the budget; against a moderate 100 g low-carb day it is 12 percent.

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