Put oven rack in middle position and preheat oven to 350°F. Cut out a round of parchment paper to fit just inside a 5- to 6-quart heavy ovenproof pot, then set round aside.
Blanch kale in a 6- to 8-quart pot of boiling salted water in 2 batches, 2 minutes per batch, transferring with tongs to a colander as blanched, then drain well.
Warm oil in 5- to 6-quart pot over moderate heat, then add pancetta and cook, stirring frequently, until crisp, 10 to 15 minutes. Transfer pancetta with a slotted spoon to a plate and reserve, discarding all but 1/4 cup of fat in pot (if necessary).
Tie thyme, bay leaf, and parsley together with kitchen string to make a bouquet garni and add to pot along with onions and garlic. Cook over moderate heat, stirring frequently, until onions are golden brown, about 20 minutes. Return pancetta to pot then add butter and heat, stirring occasionally, until melted. Stir in kale and add enough stock to cover three fourths of kale. Increase heat to high and bring to a simmer. Cover kale directly with parchment round, then transfer pot to oven and braise, stirring once or twice, until kale is very tender, about 45 minutes.
Transfer pot to stovetop and discard parchment, then boil mixture, stirring occasionally, until almost all of liquid is evaporated but kale is still moist, about 35 minutes. Discard bouquet garni and garlic and season kale with salt and pepper.

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Nutrition Facts

Per Serving Per 100 g

Amount Per 1 Serving
Calories	410.98 Kcal (1721 kJ)
Calories from fat	252.7 Kcal
		% Daily Value*
Total Fat	28.08g	43%
Cholesterol	38.85mg	13%
Sodium	1674.12mg	70%
Potassium	358.83mg	8%
Total Carbs	27.49g	9%
Sugars	9.21g	37%
Dietary Fiber	5.03g	20%
Protein	18.16g	36%
Vitamin C	4.1mg	7%
Calcium	56.1mg	6%

Amount Per 100 g
Calories	96.61 Kcal (404 kJ)
Calories from fat	59.4 Kcal
		% Daily Value*
Total Fat	6.6g	43%
Cholesterol	9.13mg	13%
Sodium	393.52mg	70%
Potassium	84.35mg	8%
Total Carbs	6.46g	9%
Sugars	2.16g	37%
Dietary Fiber	1.18g	20%
Protein	4.27g	36%
Vitamin C	1mg	7%
Calcium	13.2mg	6%

* Percent Daily Values are based on a 2000 calorie diet. Your daily values may be higher or lower depending on your calorie needs.
Find out how many calories should you eat.

Tastes

salty
savory
bitter
sweet

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