Kohlrabi and Tomato Casserole with Sage

By , Test Kitchen Director · Reviewed by AislePrompt Editorial · ·

A comforting layered casserole combining tender kohlrabi, juicy tomatoes, and fragrant sage baked to a golden finish. This mediterranean-inspired vegetarian (vegetarian) ready in about 65 minutes pairs medium (about 2.5 lbs) kohlrabi bulbs, large (about 1 lb) ripe tomatoes, leaves fresh sage leaves for a weeknight-friendly dinner that comes together with one pan and minimal cleanup. Each serving lands at about 180 calories and feeds 4, so it slots cleanly into a weekly meal plan and pairs well with a quick salad or grain on the side. Tap "Plan a meal with the AI" below to drop this recipe into your week and send the ingredients straight to Instacart. Nutrition values are approximate, calculated from USDA FoodData Central (fdc.nal.usda.gov) — verify against ingredient labels for any health-driven dietary plan.

Prep: 20 min Cook: 45 min Serves 4 Mediterranean cuisine 180 cal/serving
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Ingredients

Instructions

  1. Step 1: Preheat oven to 375°F (190°C). Peel and thinly slice 3 medium kohlrabi bulbs into 1/8-inch rounds.
  2. Step 2: Core and slice 3 large ripe tomatoes into 1/4-inch thick rounds.
  3. Step 3: Heat 3 tbsp olive oil in a skillet over medium heat. Add 2 minced garlic cloves and 10 fresh sage leaves; sauté for 2 minutes until fragrant but not browned, then remove from heat.
  4. Step 4: Lightly grease a 9x9-inch baking dish. Arrange a layer of kohlrabi slices to cover the bottom, sprinkle with salt and pepper, then add a layer of tomato slices.
  5. Step 5: Drizzle half of the garlic and sage olive oil over the layers. Repeat layering with remaining kohlrabi and tomatoes, seasoning each layer.
  6. Step 6: Sprinkle 1/2 cup grated Parmesan cheese evenly over the top.
  7. Step 7: Cover with foil and bake for 30 minutes. Remove foil and bake for an additional 15 minutes until the top is golden and bubbly.
  8. Step 8: Let rest for 10 minutes before serving to allow the casserole to set.

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Frequently asked questions

How long does Kohlrabi and Tomato Casserole with Sage take to make?

Total time is about 65 minutes (20 min prep + 45 min cook). Most home cooks find this fits comfortably into a weeknight; double the batch on Sunday for two dinners.

How do I store leftover Kohlrabi and Tomato Casserole with Sage?

Cool to room temperature within 2 hours, then store in an airtight container in the fridge for up to 4 days. Reheat covered in a 350°F oven for 10-12 minutes, or microwave at 70% power in 60-second bursts to keep leaves fresh sage leaves from drying out.

Can I substitute ingredients in Kohlrabi and Tomato Casserole with Sage?

Yes — most ingredients in this recipe have flexible swaps. For oil, use any neutral high-smoke-point oil (avocado, grapeseed, refined coconut). For aromatics, dried herbs at ⅓ the volume of fresh work in a pinch. The full ingredient list is shoppable on Instacart so you can see substitutes in real time.

How do I scale Kohlrabi and Tomato Casserole with Sage for a different number of people?

The recipe is written for 4 servings. Multiply each ingredient by (your serving target / 4). Cook time stays roughly the same up to 2x; for 3-4x batches, switch from a skillet to a sheet pan or stockpot so the food isn't crowded — overcrowding steams instead of browns.

Is Kohlrabi and Tomato Casserole with Sage vegetarian?

Yes — this recipe is tagged vegetarian based on its ingredient list. Always cross-check labels for packaged ingredients (sauces, broths, condiments) since formulations vary by brand.

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