Ingredients

• 1 (15-ounce) container whole milk ricotta cheese
• 1 (10-ounce) package frozen chopped spinach, thawed, squeezed dry
• 4 ounces thinly sliced prosciutto, chopped
• 2 large egg yolks
• 3/4 teaspoon salt
• 1/2 teaspoon freshly ground black pepper
• 48 wonton wrappers
• 1/2 cup (1 stick) butter
• 1 1/2 teaspoons dried oregano
• Freshly grated pecorino

Instructions

1. Watch how to make this recipe.
2. Whisk the ricotta, spinach, prosciutto, egg yolks, salt, and pepper in a medium bowl to blend.
3. Place 1 tablespoon of the ricotta filling in the center of a wonton wrapper. Brush the edge of the wrapper lightly with water. Fold the wrapper in half, enclosing the filling completely and forming a triangle. Pinch the edges to seal. Transfer the ravioli to baking sheets. Repeat with the remaining filling and wrappers. (Can be prepared up to 2 hours ahead; cover and refrigerate.)
4. Melt the butter in a heavy small skillet over medium heat. Add the oregano and stir 1 minute. Season, to taste, with salt and pepper. Remove from the heat.
5. Working in batches, cook the ravioli in a large pot of boiling salted water until just tender, stirring occasionally, about 4 minutes per batch. Transfer the ravioli to a large shallow bowl.
6. Pour the oregano butter over the ravioli and toss gently to coat. Sprinkle the pecorino over the ravioli and serve.