Blackstone Garlic Butter (The Universal Finish)
Garlic butter is the finishing move that makes griddle food taste like restaurant food. A pat dropped onto a seared steak as it rests, tossed with shrimp in the last 30 seconds of cooking, melted over griddled asparagus — it takes something already good and adds richness, depth, and the char-amplifying quality that butter brings to high-heat cooking.
It takes 10 minutes to make, keeps in the fridge for two weeks, and works on everything that comes off the flat-top.
Prep time: 10 minutes · Chill time: 30 minutes · Makes: about ½ cup (8–10 servings)
Ingredients
- ½ cup (1 stick / 113g) unsalted butter, softened to room temperature
- 4 cloves garlic, minced to a fine paste
- 2 tbsp fresh flat-leaf parsley, finely chopped
- 1 tsp fresh lemon juice
- ½ tsp kosher salt
- ¼ tsp freshly ground black pepper
Instructions
Step 1: Soften the butter
Pull the butter out of the fridge at least 30–45 minutes before making the compound. It needs to be genuinely soft — press your finger in and it should give easily. Cold butter won’t mix properly; the garlic and herbs won’t incorporate.
Step 2: Mince the garlic
Mince the garlic as fine as you can — then keep going. For compound butter, you want a near-paste consistency so the garlic distributes evenly through every slice and doesn’t come in big raw bites. A pinch of salt while you mince helps break it down.
Step 3: Mix
In a bowl, combine the softened butter, garlic paste, parsley, lemon juice, salt, and pepper. Mix thoroughly with a fork or spatula until the garlic and herbs are evenly distributed throughout and the butter is uniform in color.
Step 4: Form and chill
Scoop the butter onto a sheet of plastic wrap and roll it into a log about 1½ inches in diameter. Twist the ends tight and refrigerate for at least 30 minutes until firm. Slice off rounds as needed.
Alternatively, keep it in a small ramekin if you plan to use it within a week.
What to Finish With It
Garlic butter works on virtually everything off a hot griddle:
- Blackstone steak — drop a round onto the steak as it rests; the heat from the meat melts it into a natural basting sauce
- Blackstone shrimp — add in the last 30 seconds, toss to coat
- Blackstone salmon — spoon over the fillet in the final minute of cooking
- Blackstone asparagus — toss the cooked spears with a knob immediately off the griddle
- Blackstone pork chops — same approach as steak; the fat in the butter carries the garlic into the meat
- Blackstone chicken — finish bone-in thighs with a round while they rest
- Griddled mushrooms, corn, potatoes, and crusty bread sliced and toasted face-down on the flat-top
Variations
Herb butter: Swap the parsley for fresh thyme, rosemary, and chives — or a combination of all three. Better on steak and pork than on shrimp or fish.
Citrus garlic butter: Double the lemon juice and add ½ tsp lemon zest. Brighter and more acidic — excellent on seafood and asparagus.
Smoky garlic butter: Add ½ tsp smoked paprika and a pinch of cayenne. Pairs especially well with pork chops and griddled corn.
Spicy garlic butter: Add ¼ tsp red pepper flakes and a few dashes of hot sauce. Toss shrimp in this for a hybrid garlic-butter-buffalo situation that works better than it sounds.
Tips
Use unsalted butter. Salted butter has variable sodium content between brands. Unsalted lets you control the salt yourself — critical when you’re finishing already-seasoned proteins.
Fresh garlic only. Pre-minced jarred garlic has a sharp, slightly fermented flavor that’s noticeable in a cold-mixed compound. Worth the extra 2 minutes to mince it fresh.
The log lasts two weeks refrigerated, three months frozen. Keep one in the freezer and you’ll always have it — slice a round directly from frozen and drop it on a hot protein.
Add it off heat or at the end. Garlic butter’s flavor compounds break down at high griddle temps. It’s a finishing sauce, not a cooking fat. Use a neutral oil (avocado, vegetable) for the cook, then add the garlic butter in the final minute.
More flat-top sauces: Chimichurri Sauce · Blackstone Teriyaki Sauce · Avocado Crema
Frequently Asked Questions
Can I use garlic butter as a cooking fat on the Blackstone?
Not as your primary fat — garlic burns at high griddle temps and will turn bitter before the protein is seared. Use it at medium-low heat (300–325°F) or add it at the end of the cook as a finish. For the actual sear, cook in avocado or vegetable oil.
How long does compound garlic butter last?
Up to two weeks in the fridge wrapped tightly. Up to three months in the freezer. The fresh parsley will dull in color but the flavor holds well in the freezer.
What’s the difference between compound butter and clarified butter?
Compound butter is regular butter mixed with flavorings — it’s a finishing and flavoring agent. Clarified butter (butter with the milk solids removed) is used as a cooking fat because it has a higher smoke point than whole butter. They serve different purposes and aren’t substitutes for each other.
Can I make garlic butter in a food processor?
Yes, but you risk over-processing the butter into a greasy, broken consistency. Mix by hand with a fork — it takes three minutes and produces a better texture.
Is garlic butter gluten-free?
Yes — the recipe contains no gluten-containing ingredients. Check your butter brand if strict gluten-free is required, but nearly all commercial butter is gluten-free.