Spanakopita Smashburgers Recipe

I cooked up these amazing Spanakopita Smashburgers for dinner last night, and they completely blew my family away! I combined the rich, crispy perfection of a classic Oklahoma-style smashburger with the savory garlic, dill, and spinach flavors of Greek spanakopita.

The salty feta crumbled right into the juicy beef patties creates an incredible burst of flavor in every bite. Squeezing garlicky sautéed spinach and melted mozzarella onto a warm, toasted potato bun was an absolute game changer. If you love mashups that take weeknight burgers to a whole new level, this recipe is guaranteed to become an instant favorite in your house!

Ingredients

Choosing the right blend of fresh greens, savory cheeses, and quality beef ensures your burgers achieve crispy edges and maximum flavor.

• Ground beef 85% lean (1 1/2 pounds) – Provides the ideal fat ratio to keep your smashburgers juicy while creating those signature crispy, caramelized edges.
• Feta cheese (3 ounces, crumbled / 2/3 cup) – Adds a bold, salty, Mediterranean tang folded straight into the beef patties.
• Kosher salt (2 1/4 teaspoons, divided) – Enhances the natural beefiness and seasons the fresh garlicky spinach mixture; use kosher salt for even coverage.
• Mayonnaise (1/4 cup) – Spread onto cut bun surfaces to yield a perfectly golden, crispy toasted layer on the griddle.
• Potato hamburger buns or white hamburger buns (4, split) – Soft potato buns hold up wonderfully to the juicy toppings without falling apart.
• Dill pickle slices (6, halved) – Offers a bright, vinegary crunch that cuts through the rich cheeses and savory beef.
• White onion (1/2 cup, thinly sliced) – Smashed directly under the beef patties to caramelize and sweeten as the meat sears.
• Low-moisture part-skim mozzarella cheese (2 ounces, shredded / 1/2 cup) – Melts smoothly over the warm patties to bind the onions and toppings together.
• Garlic cloves (2 large, thinly sliced / 1 tablespoon) – Thinly sliced garlic chips release rich aromas into the leftover griddle beef drippings.
• Fresh baby spinach (1 5-ounce package) – Sautéed directly on the hot griddle until just tender to replicate classic spanakopita filling.
• Jarred crushed Calabrian chiles (1/2 teaspoon) – Delivers a subtle, smoky heat that lifts the rich spinach and cheese flavors.
• Fresh dill (2 tablespoons, chopped) – Brings a signature bright, herbal zest that instantly elevates the burger.

Note: Serves 4 large, restaurant-style smashburgers (4 full servings).

Variations

This recipe offers plenty of flexibility so you can customize the protein, heat, or dairy to suit your personal tastes.

• Turkey or Chicken Swap: Replace the ground beef with ground turkey or chicken, ensuring you press them firmly onto a well-oiled griddle for a crisp sear.
• Tzatziki Sauce Addition: Spread a dollop of cool, creamy cucumber tzatziki on the top bun instead of mayonnaise for extra authentic Greek flair.
• Mild Heat Option: Omit the crushed Calabrian chiles or swap them for a pinch of mild sweet paprika if cooking for younger kids or heat-sensitive guests.
• Low-Carb / Gluten-Free Adaptation: Swap the potato buns for gluten-free hamburger buns or serve the smashburgers over a bed of fresh Greek salad greens.

Cooking Time

Here is a complete breakdown of the quick prep and cook times for these delicious smashburgers.

• Prep Time: 15 minutes
• Cooking Time: 15 minutes
• Total Time: 30 minutes

Equipment You Need

Having a few sturdy flat-top cooking tools ready will make smashing and assembling your burgers seamless.

• Flat-top griddle or large cast-iron skillet – Used to sear the burgers at high heat and toast the buns to perfection.
• Heavy cast-iron skillet or burger press – Used to firmly flatten the meat and onion balls into thin smashburgers.
• Sturdy metal spatula – Used to scrape up the caramelized beef crust cleanly when flipping the patties.
• Cutting board and chef’s knife – Used for thinly slicing the garlic, onions, and chopping fresh dill.

How to Make Spanakopita Smashburgers Recipe?

Making these smashburgers involves a few quick, high-heat steps to achieve ultimate crispiness and incredible flavor.

Prepare the Patties and Toast the Buns

Prepping your meat mixture and caramelizing your buns sets up the foundation for success before hitting the hot griddle. Gently mix the ground beef, crumbled feta cheese, and 1 3/4 teaspoons of kosher salt in a bowl until just combined, taking care not to overwork the meat. Divide the beef into four loosely packed balls weighing about 6 3/4 ounces each and set them aside. Heat your griddle over medium heat, spread mayonnaise evenly onto the cut side of each bun half, and sear them face-down for 2 to 3 minutes until golden brown before placing 3 pickle halves onto each bottom bun.

Smash and Sear the Burgers

Smashing the meat over sliced onions locks in incredible juices and creates those famous crispy caramelized edges. Place 4 small piles of sliced white onions onto the hot griddle, top each pile with a beef ball, and press down firmly using a heavy press or cast-iron skillet until flattened to 1/3-inch thickness. Leave the heavy weight on the burgers for 3 to 4 minutes until the meat edges turn crispy and the onions brown underneath. Flip the burgers, sprinkle mozzarella cheese over each patty, and cook for another 1 to 2 minutes until the cheese melts completely before transferring the patties onto the prepared bottom buns.

Cook Garlicky Spinach and Assemble

Sautéing the spinach in the remaining flavorful beef drippings completes the delicious spanakopita flavor profile. Add the sliced garlic directly to the hot griddle drippings and stir constantly for 1 minute until fragrant and lightly golden. Toss in the baby spinach, crushed Calabrian chiles, and the remaining 1/2 teaspoon of salt, stirring constantly for 2 minutes until wilted. Stir in the chopped fresh dill, divide the warm spinach mixture evenly over the 4 burger patties, top with the upper buns, and serve hot immediately.

Additional Tips for Making this Recipe Better

A few practical tricks from my own griddle cooking sessions will ensure your burgers turn out perfectly every time.

• Do not overwork the beef: I always mix the ground beef, feta, and salt very gently with my hands so the patties stay tender rather than becoming dense and tough.
• Use a heavy cast-iron press: I recommend using a heavy weight or skillet wrapped in foil to press the burgers as flat as possible for maximum crispy edge surface area.
• Do not wipe the griddle clean: I leave all the savory beef and onion drippings on the griddle because sautéing the garlic and spinach in those pan drippings infuses incredible depth into the greens.
• Shred your mozzarella fresh: I prefer shredding block mozzarella myself because pre-packaged shredded cheeses do not melt as smoothly over the hot patties.

How to Serve Spanakopita Smashburgers Recipe?

Serve these tall, juicy Spanakopita Smashburgers on wooden boards or diner-style baskets lined with butcher paper to highlight the rich layers of melted mozzarella, bright green spinach, and crispy beef. Pair them with a side of crispy Greek lemon oregano oven fries, warm pita chips with tzatziki, or a fresh cucumber-tomato salad dressed in olive oil and red wine vinegar. Offer extra pickle spears and lemon wedges on the side for guests who want an extra touch of acidity.

Nutritional Information

Below is an estimated breakdown of key nutritional values per smashburger.

• Calories: 680 kcal
• Protein: 42 g
• Carbohydrates: 36 g
• Fat: 40 g

Make Ahead and Storage

Following these simple prep and storage guidelines will keep your burgers tasting fresh and delicious.

Reheating

Reheat leftover burger patties in a skillet over medium heat for 2 to 3 minutes per side until warmed through, then assemble on fresh buns with freshly wilted spinach.

Freezing

It is best to freeze unbaked beef-feta balls wrapped tightly in plastic wrap for up to 1 month. Thaw completely in the refrigerator overnight before smashing and cooking on a hot griddle.

Storing and Freshness

Store cooked beef patties and sautéed spinach separately in airtight glass containers in the refrigerator for up to 3 days. Reassemble with fresh buns when ready to serve.

Why You’ll Love This Recipe?

This Spanakopita Smashburger recipe delivers maximum comfort food flavor with fun Mediterranean twists.

• Ultimate Flavor Mashup: Combining juicy, crispy smashburgers with garlicky spanakopita spinach and salty feta creates a mouthwatering taste explosion.
• Super Fast Weeknight Dinner: The entire recipe cooks in just 15 minutes on a hot griddle, making it ideal for quick, high-reward dinner nights.
• Crispy Onion Crust: Smashing the beef directly over thin white onions creates a sweet, caramelized crust that adds amazing texture to every bite.
• Simple Prep Ahead Steps: You can easily form the beef balls and chop your vegetables a day in advance for effortless cooking when dinnertime arrives.