Heat 1 tablespoon of olive oil in a large skillet over medium-high heat. Once the oil shimmers, add the ground beef, breaking it up as it cooks. Sauté for 7–8 minutes until it’s browned and cooked through. Season with salt, black pepper, dried oregano, and crushed red pepper flakes for an extra kick. Remove the beef from the skillet and set it aside.

In the same skillet, add another tablespoon of olive oil if the pan is dry. Toss in the sliced red onion and chopped red bell pepper, sautéing for about 3–4 minutes. Stir occasionally until the vegetables soften and become fragrant.

Introduce the sliced zucchini to the pan, stirring it into the mix. Continue cooking for 5–6 minutes until the zucchini is tender yet retains a slight crunch.

Now, stir in the halved cherry tomatoes and minced garlic, allowing their flavors to meld. Cook for an additional 2–3 minutes, until the tomatoes start to blister and the garlic releases its tantalizing aroma.

Return the browned ground beef to the skillet, mixing all the ingredients thoroughly. Allow everything to cook together for an additional 2–3 minutes, letting the flavors blend beautifully.

With the heat off, gently stir in the halved kalamata olives and toasted pine nuts. Crumble feta cheese over the top, which adds a creamy texture and tangy flavor.

Before serving, sprinkle the dish with chopped fresh parsley for a touch of brightness. Enjoy your vibrant Mediterranean Ground Beef Stir-Fry warm on its own or over grains like rice, couscous, or quinoa for a complete meal.