Grilled Wagyu Beef Sandwich with Beetroot Relish and Aioli

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

A hearty Australian-inspired sandwich layering tender smoked Wagyu beef with sweet beetroot relish and creamy garlic aioli on toasted rustic bread. This Australian-inspired sandwich and wrap recipe, ready in about 18 minutes, pairs smoked Wagyu beef slices, rustic sourdough bread, beetroot relish for a weeknight-friendly dinner that comes together with one pan and minimal cleanup. Each serving lands at about 650 calories and feeds 2, 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: 10 min Cook: 8 min Serves 2 Australian cuisine 650 cal/serving
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Ingredients

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Instructions

  1. Step 1: Spread 3 tbsp garlic aioli evenly over one side of each of the 4 slices of rustic sourdough bread.
  2. Step 2: Layer 2 oz smoked Wagyu beef slices on two of the bread slices, then spread 1/6 cup beetroot relish evenly over the beef.
  3. Step 3: Top the relish with 1/2 cup baby spinach leaves on each sandwich.
  4. Step 4: Close the sandwiches with the remaining bread slices aioli-side down.
  5. Step 5: Heat 1 tbsp unsalted butter in a skillet over medium heat. Grill each sandwich for 3-4 minutes per side until the bread is golden brown and slightly crispy, and the filling is warmed through.
  6. Step 6: Remove from skillet, slice in half, and serve immediately.

Frequently asked questions

How long does Grilled Wagyu Beef Sandwich with Beetroot Relish and Aioli take to make?

Total time is about 18 minutes (10 min prep + 8 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 Grilled Wagyu Beef Sandwich with Beetroot Relish and Aioli?

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 smoked wagyu beef slices from drying out.

Can I substitute ingredients in Grilled Wagyu Beef Sandwich with Beetroot Relish and Aioli?

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 Grilled Wagyu Beef Sandwich with Beetroot Relish and Aioli for a different number of people?

The recipe is written for 2 servings. Multiply each ingredient by (your serving target / 2). 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.

What goes well with Grilled Wagyu Beef Sandwich with Beetroot Relish and Aioli?

Australian sandwiches & wraps like this pair well with a simple grain (rice, couscous, or crusty bread), a quick salad with acid (lemon vinaigrette, pickled onions), and a pan sauce or yogurt-based dip. Tap "Plan a meal with the AI" to get specific side suggestions.

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