
The sizzle of steak hit the Blackstone, filling the air with that irresistible aroma that promises a meal you’ll remember. I first cooked these Steak Cheese Quesadillas on a spontaneous weeknight, craving something quick yet hearty. The way the caramelized onions mingled with melted mozzarella and Monterey Jack cheese had me hooked instantly—comfort food elevated right on the griddle.
The first time I tried cooking these on the Blackstone, I underestimated how fast the quesadillas brown. That crispy, golden exterior only comes with a watchful eye—and now it’s my favorite part to master.
Essential Ingredients
- Skirt steak: flavorful and tender when diced; look for bright red meat with minimal marbling for the best bite
- Onion: adds sweet savoriness; choose firm, glossy onions without soft spots
- Mozzarella cheese: contributes gooey stretchiness; fresh, whole-milk shredded is ideal
- Monterey Jack cheese: enhances meltiness and adds subtle creaminess; avoid pre-shredded blends with anti-caking agents for smoother melt
- Flour tortillas: burrito-size for filling and easy folding; fresh ones that are pliable but not too soft work best
Shopping tip: pick skirt steak from a trusted butcher for quality cuts; for cheese, the fresher the better—it makes all the difference on the grill.
Cooking Process
- Building the Base:
- Preheating the Blackstone to medium-high ensures a perfect sear on the diced steak and onions, locking in juices and flavor. Cooking in a single layer guarantees even caramelization.
- Marrying Ingredients:
- Pushing the steak and onions aside to lower the grill’s temperature creates a gentler heat zone for toasting tortillas without burning.
- Layering for Melt:
- Spreading both cheeses beneath and on top of the steak-onion mix encloses all the deliciousness, allowing cheese to melt into every crevice.
- Golden Crunch Finish:
- Flipping the folded tortilla quickly browns both sides, forming a crisp shell that contrasts beautifully with the tender filling. Close attention here prevents overcooking.

Recipe Highlights
One time, I forgot to reduce the heat after cooking the steak and ended up with quesadillas that browned too fast on the outside but left the cheese barely melted inside. That mistake taught me patience and temperature control are just as vital as fresh ingredients.
Make-Ahead Strategies
Prepare the steak and onion mixture earlier in the day and store it in the fridge. When hunger strikes, warm the filling briefly on the Blackstone, assemble quesadillas, and finish them on the grill in minutes. Tortillas keep best at room temperature wrapped in a clean cloth to stay pliable.
Flavor Variations
Try adding a handful of chopped jalapeños with the onions for a spicy kick or swap in smoked gouda for a deeper, smoky cheese flavor. A sprinkle of fresh cilantro or a squeeze of lime just before folding brightens the whole dish.
Seasonal Adaptations
In cooler months, toss in some diced roasted bell peppers or mushrooms with the onions to add earthiness. Summer calls for fresh sliced avocado alongside or even grilled corn kernels folded inside for sweet crunch.
Kitchen Tool Recommendations
The Blackstone griddle shines here for even heat distribution and space to cook multiple quesadillas at once. A large, flat spatula ensures careful flipping, while a sharp knife makes slicing clean, easy wedges.
Cooking Secrets
- Pat the steak pieces dry before seasoning for a better sear and caramelization
- Don’t overload the quesadilla; a little cheese and filling go a long way to get the perfect crispy-to-melty ratio
- Stay attentive when grilling quesadillas—once browned, they go from golden to burnt quickly on the Blackstone

Common Questions
- → What cut of steak works best for quesadillas?
Skirt steak is ideal due to its rich flavor and quick cooking time, but flank steak can also provide a tender result.
- → How do I prevent quesadillas from burning on the Blackstone?
Cook over medium heat after searing the steak to avoid excessive browning. Watch closely as tortillas brown quickly.
- → Can I substitute the cheese used here?
Mozzarella and Monterey Jack offer melty stretchiness, but cheeses like cheddar or pepper jack can add unique flavors.
- → How should leftovers be stored?
Keep quesadillas in an airtight container and refrigerate for up to five days to maintain freshness.
- → What tools are recommended for cooking on a Blackstone?
A large flat-top grill, a sturdy spatula for flipping, and a sharp knife for slicing complete the toolbox.