PrepWash radishes and remove the greens. Slice into halves or quarters. (Quarters will cook more quickly.)
Remove ends from zucchini and slice into 1/2" rounds.
Finely chop onion and mince garlic.
PastaBring salted water to a boil and add pasta. Cook 8-10 minutes, until al dente. Drain and set aside.
CookingIn a large skillet, heat olive oil over medium low. Add radishes, cut side down. Sprinkle with sea salt and pepper. Cook 15-20 minutes until they soften. They should be fork tender.
In the skillet with the radishes, add 2 tablespoons of lemon juice and onion. Saute 3-5 minutes until onion is translucent. Add garlic and zucchini and continue cooking. Add cayenne and chili flakes. Stir every 2-3 minutes until veggies are tender.
Pour in remaining 1/4 cup of lemon juice, coconut milk, basil, and arugula and stir. Cook on medium low for 5 minutes.
Add in pasta and stir to combine. Serve immediately. If desired, top with fresh black pepper and grated parmesan.