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Keto Zucchini Caprese Bake – Fresh, Flavorful, and Low-Carb

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Prep Time 15 minutes
Cook Time 25 minutes
Total Time 40 minutes
Servings: 6 servings
Ingredients Method

Ingredients
  

  • 3 medium zucchini, sliced lengthwise into 1/4-inch planks
  • 1 teaspoon kosher salt (for drawing out moisture)
  • 2 cups cherry or grape tomatoes, halved (or 3 medium Roma tomatoes, sliced)
  • 12 ounces fresh mozzarella, sliced into 1/4-inch rounds
  • 1/2 cup freshly grated Parmesan cheese
  • 2 tablespoons extra-virgin olive oil, plus more for drizzling
  • 3 cloves garlic, minced
  • 1/2 teaspoon crushed red pepper flakes (optional)
  • 1/2 teaspoon freshly ground black pepper
  • 1/2 cup fresh basil leaves, torn or sliced into ribbons
  • 2 tablespoons balsamic vinegar or balsamic reduction (use reduction for strict keto)
  • Optional: 1/4 cup pesto for extra richness

Method
 

  1. Prep the zucchini: Lay zucchini planks on a sheet pan and sprinkle both sides with kosher salt. Let sit 15–20 minutes to draw out water. Pat very dry with paper towels.
  2. Preheat the oven: Set to 400°F (200°C). Lightly oil a 9x13-inch baking dish.
  3. Season the tomatoes: In a bowl, toss tomatoes with 1 tablespoon olive oil, garlic, black pepper, and red pepper flakes if using. If your tomatoes are very juicy, pat them once with a paper towel.
  4. Build the first layer: Arrange a snug layer of zucchini in the baking dish. Drizzle with a little olive oil. Add half the tomatoes, half the mozzarella, and a sprinkle of Parmesan. Scatter some basil.
  5. Repeat: Add another layer of zucchini, remaining tomatoes, mozzarella, and most of the Parmesan (reserve a tablespoon or two for topping). If using pesto, dot small spoonfuls across this layer.
  6. Finish and bake: Top with the last bit of Parmesan. Bake uncovered for 18–22 minutes, until the cheese is melted and bubbling and the zucchini is tender but not mushy.
  7. Broil for color: Switch to broil for 1–2 minutes to lightly brown the top. Watch closely to avoid burning.
  8. Rest and drizzle: Let the bake rest 5–10 minutes to set. Drizzle with balsamic (or reduction) and a touch of olive oil. Finish with fresh basil.
  9. Serve: Slice into squares and serve warm. Pair with a side salad or grilled protein for a fuller meal.