4 cups (960 ml) low-sodium chicken stock or water 1 cup (160 g) coarse yellow polenta (cornmeal) 1 tsp kosher salt, plus more to taste 1 / 4 tsp freshly ground black pepper 1 / 2 cup (50 g) finely grated Parmigiano-Reggiano 2 tbsp (30 ml) extra-virgin olive oil (stirred into polenta) 3 tbsp (45 ml) extra-virgin olive oil (for searing) 1 / 2 cup (15 g) finely chopped flat-leaf parsley 2 tbsp (30 g) capers, rinsed and finely chopped 1 small garlic clove, finely grated Zest of 1 lemon 1 tbsp (15 ml) fresh lemon juice 1 / 2 tsp finely chopped fresh sage (optional) Pinch red pepper flakes (optional)
Line an 8-inch square pan with parchment, leaving overhangs for easy lifting. Lightly oil the parchment. Bring the stock to a boil in a medium saucepan. Whisk in polenta and 1 teaspoon salt. Reduce heat to low and cook, stirring frequently, until thick and creamy, 15–20 minutes. Off heat, stir in black pepper, Parmigiano-Reggiano, and 2 tablespoons olive oil. Taste and adjust seasoning. Spread polenta into the prepared pan about 1/2 inch thick. Smooth the top, let cool to room temperature, then refrigerate until firm, 45–60 minutes. Lift the slab onto a board and cut into 1- to 1 1/2-inch squares. Heat 3 tablespoons olive oil in a large nonstick skillet over medium-high. Sear polenta squares in batches until deeply golden and crisp, 3–4 minutes per side. Transfer to a warm platter. Make the gremolata: In a small bowl, combine parsley, capers, garlic, lemon zest, lemon juice, sage (if using), red pepper flakes (if using), a pinch of salt, and a drizzle of olive oil if needed to loosen. Stir to combine. Spoon a little gremolata over each warm polenta square and serve immediately.
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