Ingredients

1 tablespoon grapeseed oil

1 tablespoon unsalted butter

2 cloves garlic, thinly sliced

1 bulb fennel, trimmed and thinly sliced crosswise

1 small red onion, thinly sliced crosswise

1 large head escarole, washed, tough stems removed and coarsely chopped

1 sprig fresh oregano

Crushed red-pepper flakes

Coarse salt

Preparation

Place a large skillet over medium heat. Add oil, butter, and garlic; cook until garlic is golden brown. Add fennel and onion and cook, stirring, until almost tender and caramelized, 10 to 15 minutes. Add escarole, oregano, and red-pepper flakes; season with salt. Cook until escarole is wilted, 3 to 4 minutes. Serve immediately.