Step 1

Preheat oven to 400ºF. Bring a pot of salted water to a boil. Line a baking sheet with heavy-duty aluminum foil. On sheet, toss cauliflower with 2 Tbsp. oil and sprinkle with salt. Roast until cauliflower is soft, 15 to 20 minutes, stirring once or twice while cooking.

Step 2

Cook pasta in boiling water until al dente, about 10 minutes or as package label directs. While pasta is cooking, warm remaining 1 Tbsp. oil in a large skillet over medium-high heat. Add garlic and sauté until fragrant, about 30 seconds. Add kale and cook, stirring, until wilted, 1 to 2 minutes. Reduce heat to medium-low and add cream, lemon zest and juice, 1/4 tsp. salt and red pepper, if desired. Cook, stirring, until mixture is just bubbling, about 2 minutes.

Step 3

Drain pasta, reserving 1/2 cup cooking water. Stir pasta into skillet to coat with sauce. Stir in cauliflower, ricotta and Parmesan. If mixture seems dry, stir in reserved cooking water 1 Tbsp. at a time to reach desired consistency. Season with salt and serve.