1 large bunch rainbow chard
1 tablespoon extra-virgin olive oil
3 tablespoons pine nuts
1/4 teaspoon salt
1 tablespoon minced garlic
1 tablespoon cold unsalted butter, cut into 4 pieces
1/4 cup grated Parmesan cheese
1/4 cup thinly sliced fresh basil leaves (8 to 10 large leaves)
Cut the stems from the chard leaves. Cut the leaves into 2- to 3-inch pieces and wash and dry them well. Rinse the stems and slice them crosswise 1/4-inch thick.
In a 12-inch stir-fry pan or skillet, heat the olive oil over medium heat. Add the pine nuts and cook, stirring constantly, until lightly browned, 2 to 3 minutes. Transfer the pine nuts to a plate, leaving behind as much oil as possible.
Return the pan to medium-high heat, add the chard stems and a pinch of salt, and cook, stirring occasionally, until shrunken and beginning to brown lightly, 6 to 7 minutes. Add the garlic and cook just until fragrant, about 15 seconds. Add the chard leaves and salt. Toss with tongs until just wilted, 1 to 2 minutes. Remove the pan from the heat, add the cold butter pieces and stir just until the butter has melted.
Using tongs, immediately transfer about half of the leaves and stems to a serving plate and arrange. Sprinkle on half of the Parmesan, basil, and pine nuts. Layer on the remaining leaves, stems, and pan juices, and garnish with the remaining cheese, basil, and pine nuts. Serve immediately.