Laura de Lima Xavier MD: A Doctor’s Guide to Healthy Cooking

Updated November 6, 2026

Total time
50 min
prep 20 min · cook 30 min
Serves
4
portions as written

Jump to recipe

Laura de Lima Xavier MD: A Doctor's Guide to Healthy Cooking

This recipe article is a practical guide inspired by the principles of preventive medicine, focusing on a balanced, nutrient-dense meal that is both satisfying and easy to prepare. It features a colorful sheet-pan dinner with lean protein and vegetables, designed to support heart health and overall wellness—an approach that aligns with the philosophy of a physician like Dr. Laura de Lima Xavier, who emphasizes the role of diet in disease prevention. The beauty of this dish lies in its simplicity: minimal prep, one-pan cleanup, and a flavor profile that appeals to the whole family.

Ingredients

  • 4 (6 oz / 170 g) boneless, skinless chicken breasts
  • 2 tablespoons (30 ml) olive oil, divided
  • 1 teaspoon smoked paprika
  • 1 teaspoon garlic powder
  • 1/2 teaspoon dried oregano
  • 1/2 teaspoon salt
  • 1/4 teaspoon black pepper
  • 1 large lemon, zested and juiced (about 2 tablespoons / 30 ml juice)
  • 1 lb (450 g) baby potatoes, halved
  • 2 cups (150 g) broccoli florets
  • 1 red bell pepper, sliced
  • 1/2 red onion, sliced
  • 2 cloves garlic, minced
  • 2 tablespoons (8 g) fresh parsley, chopped (for garnish)

Instructions

  1. Preheat your oven to 425°F (220°C). Line a large baking sheet with parchment paper or a silicone mat.
  2. In a small bowl, combine the smoked paprika, garlic powder, oregano, salt, and black pepper. Set aside.
  3. Pat the chicken breasts dry with paper towels. Rub them with 1 tablespoon (15 ml) of the olive oil, then sprinkle with half of the spice mixture, ensuring even coverage.
  4. In a large bowl, toss the halved baby potatoes with 1/2 tablespoon (7.5 ml) olive oil and the remaining spice mixture. Spread them on one side of the prepared baking sheet.
  5. Roast the potatoes for 10 minutes, giving them a head start since they take longer to cook.
  6. While the potatoes roast, toss the broccoli, bell pepper, red onion, and minced garlic with the remaining 1/2 tablespoon (7.5 ml) olive oil and a pinch of salt and pepper.
  7. Remove the baking sheet from the oven. Place the chicken breasts in the center, and arrange the vegetables around the potatoes. Drizzle everything with the lemon juice and sprinkle with the lemon zest.
  8. Return the sheet pan to the oven and roast for 18-22 minutes, or until the chicken reaches an internal temperature of 165°F (74°C) as measured with a food thermometer (USDA FSIS safe minimum). The vegetables should be tender and lightly charred at the edges.
  9. Remove from the oven and let the chicken rest for 5 minutes before slicing. Garnish with fresh parsley and serve.

Tips

  • Don’t skip the potato pre-roast: Starting the potatoes 10 minutes early ensures they become crispy and fully cooked without overcooking the chicken or making the broccoli mushy.
  • Use a meat thermometer: Chicken is safely cooked only when it reaches 165°F (74°C) in the thickest part. Rely on the thermometer, not the color or time, to avoid undercooking or drying out the meat.
  • Swap the protein: This recipe works beautifully with salmon (cook to 145°F/63°C) or shrimp (cook until pink and opaque). Adjust cooking times accordingly—salmon may need 12-15 minutes, shrimp only 6-8 minutes.
  • Make it vegetarian: Replace the chicken with chickpeas or firm tofu (pressed and cubed). Toss them with the vegetables and roast for 20-25 minutes, no need for a thermometer.

Serving Suggestions

Serve this sheet-pan meal as is, or over a bed of cooked quinoa, brown rice, or a simple green salad. A dollop of plain Greek yogurt or a drizzle of tahini-lemon sauce adds creaminess and extra flavor. For a low-carb option, skip the potatoes and double the vegetables.

Variations

  • Mediterranean: Add cherry tomatoes, Kalamata olives, and a sprinkle of feta cheese in the last 5 minutes of roasting.
  • Spicy: Add 1/2 teaspoon of cayenne pepper or red pepper flakes to the spice mix.
  • Herbaceous: Use fresh thyme or rosemary instead of oregano, and add a handful of fresh spinach at the end, wilting it with the residual heat.
  • Asian-inspired: Swap the paprika and oregano for 1 tablespoon of soy sauce, 1 teaspoon of sesame oil, and 1/2 teaspoon of ginger powder. Drizzle with sriracha before serving.

Storage and Reheating

Store leftovers in an airtight container in the refrigerator for up to 3-4 days. Reheat in a 350°F (175°C) oven for 10-15 minutes, or in the microwave on high for 2-3 minutes, until heated through to 165°F (74°C). The vegetables will soften, but the flavor remains. For best texture, reheat the chicken separately from the vegetables if possible.

Frequently Asked Questions

Can I use chicken thighs instead of breasts? Yes, boneless, skinless thighs work great. They are more forgiving and stay juicy. Cook them to the same safe minimum internal temperature of 165°F (74°C).

Can I prepare this ahead of time? You can chop the vegetables and season the chicken up to 24 hours in advance. Store them separately in the fridge, then assemble and roast when ready. This makes weeknight dinners effortless.

What other vegetables can I use? Almost any sturdy vegetable works: carrots, zucchini, asparagus, Brussels sprouts, or cauliflower. Cut them into similar-sized pieces so they cook evenly. Softer vegetables like zucchini may need less time—add them halfway through.

Why is my chicken dry? Dry chicken is usually overcooked. Use a thermometer and remove the chicken from the oven as soon as it hits 165°F (74°C). Letting it rest for 5 minutes also helps retain juices.

Can I freeze this meal? Yes, freeze the cooked and cooled leftovers in a freezer-safe container for up to 3 months. Thaw overnight in the refrigerator and reheat thoroughly to 165°F (74°C) before eating.

Is this recipe suitable for meal prep? Absolutely. Portion into individual containers with a side of grains or greens. It will keep well in the fridge for up to 4 days, making it a perfect grab-and-go lunch.

Related

More recipes to cook

Safety notes: safe minimum internal temperatures from USDA FSIS; raw and undercooked fish guidance from the U.S. FDA. Food safety notes

Spotted an error? Tell us and we will correct it (corrections policy).