Eat the rainbow with orange cauliflower, red carrots and purple broccoli

February 12, 2025 at 2:20 p.m.
Orange cauliflower packs about 25 times more vitamin A than white cauliflower.
Orange cauliflower packs about 25 times more vitamin A than white cauliflower.

...by Katy G. Wilkens

“Eat the rainbow” is a mantra developed to encourage people to eat highly colored foods. We’re used to thinking of green beans, red bell peppers or blueberries. But more exotic possibilities are fun to explore too.


Raw or roasted, colorful vegetables are generally high in antioxidants, vitamins A and C, and fiber. They’re also great for nourishing your body.


Orange cauliflower packs about 25 times more vitamin A than white cauliflower. Darker red and purple carrots are chock-full of vitamin A and antioxidants.


The purple of purple broccoli comes from anthocyanins, the same antioxidant that colors eggplant and grapes. If you don’t like green broccoli, try the purple variety. Most people think it is less bitter and has a nuttier flavor than standard broccoli. Who knows? It might be a new favorite for you.


If you don’t have a garden and don’t see these bright vegetables in your regular grocery store, head to your local farmers market. You’ll get produce as fresh as if it just came out of your own backyard.


I love the orange cauliflower I have been growing for several years. This year, however, I planted the purple variety. (There is also a fluorescent green cauliflower.) When I peeked inside the grey-green leaves, I was astounded at the deep, almost neon purple head of cauliflower I saw!


The Husky in me could not resist pairing purple and gold veggies into a healthy snack for fans of the University of Washington. So far there isn’t a red cauliflower for Washington State Cougars fans. Maybe use crimson carrots instead?


Husky Cauliflower and Dip

This dip can be thinned with milk or water to make a good ranch dressing.


1 head purple cauliflower

1 head orange cauliflower

3-4 purple and yellow carrots (optional)

8 ounces nonfat yogurt or sour cream

1 tablespoon plus 1 teaspoon Dash salt-free seasoning blend, any flavor


Mix sour cream or yogurt and Dash seasoning with a fork until well-blended. Let sit refrigerated for several hours. Serve in dipping bowl. Wash cauliflower and cut into bite-sized florets. Place on platter with purple and yellow carrots.


Nutrition Information (per 2 tablespoon serving) 

Calories: 16, Carbohydrates: 2 grams, Protein: 1 grams, Sodium: 17 milligrams



Blasted Rainbow Veggies

1 head purple broccoli

1 head orange cauliflower

1-2 cups sliced rainbow carrots

½ pound green beans

½ onion

1 red bell pepper

2 tablespoons olive oil

¼ cup fruit or herb vinegar

Parmesan cheese, to taste (1 tablespoon per serving)


Preheat oven to 450 degrees. Cut all vegetables about the same size, about an inch square. Put in a bowl and drizzle with about 2 tablespoons olive oil. Toss vegetables. Pour onto flat baking sheet. Cook 8-10 minutes. Stir and then cook another 8-10 minutes. Test vegetables with fork to see when done.


After vegetables are done, remove from oven, sprinkle with 2 tablespoons freshly grated Parmesan cheese and 2 tablespoons fruit- or herb-flavored vinegar. Serve immediately. Makes 7 ½-cup servings.


Nutrition Information (per serving) 

Calories: 69, Carbohydrates: 7 grams, Protein: 2 grams, Sodium: 14 milligrams


[Contributor Katy G. Wilkens recently retired as registered dietitian and department head at Northwest Kidney Centers. The National Kidney Foundation Council on Renal Nutrition has honored her with its highest awards for excellence in education and for significant contributions in renal nutrition. She has also been awarded the Medal of Excellence in kidney nutrition from the American Association of Kidney Patients.]

Eating Well, Living Well classes

Studies show that working with a registered dietitian can delay kidney failure and postpone dialysis for longer than two years. FREE nutrition classes taught by Katy’s former team of registered dietitians are available at convenient times and locations around Puget Sound.


Eating Well, Living Well classes teach people how to eat healthier to slow the progress of kidney disease and postpone dialysis. Learn more at www.nwkidney.org/classes.


Share this story!