Garlic butter sauce built like a beurre blanc — smooth, stable, and ready in minutes. Make this and keep it in your freezer.
Garlic butter sauce is butter and garlic cooked together into a smooth, pourable sauce — but the difference between a good one and a greasy one is technique. This version is built like a beurre blanc, the classic French butter sauce, except where beurre blanc uses wine and vinegar, this uses water. That keeps the flavor clean and neutral so the garlic stays front and center.
The emulsification happens when fat and liquid are coaxed into a stable suspension — and two things make that possible here. First, cold butter. It melts gradually, giving the emulsion time to form instead of flooding the pan with fat all at once. Room temperature butter moves too fast and the sauce breaks before it comes together. Second, adding it one tablespoon at a time. Each cube needs to fully melt and incorporate before the next goes in — this builds the emulsion incrementally so it holds.
Once made, the sauce is versatile. It works as a dip, a pasta sauce, a spread for garlic bread — a few uses are listed below to get you started.
It also keeps well. Refrigerate in an airtight container for up to 7 days, or freeze in ice cube molds for up to 3 months. The frozen cubes are especially handy — just pull out however many you need.
One thing to watch: if the butter starts pooling and the sauce looks greasy and separated, the heat is too high. Pull the pan off immediately and keep whisking — it usually comes back together. If it doesn't, add a small splash of cold water and whisk again.
Finally, since butter is the star here, it's worth using a good one. Not sure where to start? We rounded up some of the best butters available to help you decide.
Build base: Melt 1–2 cubes of butter in a small saucepan over low heat. Add the garlic and cook, stirring, until fragrant and just softened, about 1–2 minutes. Don't let it brown.
Simmer: Pour in ¼ cup of water and whisk to combine. Bring to a light simmer — you're looking for small, steady bubbles around the edges, not a rolling boil.
Emulsify: Reduce heat to the lowest setting. Add the remaining cold butter one cube at a time, whisking constantly. Wait until each cube is fully melted and incorporated before adding the next. The sauce should look smooth and slightly creamy as it comes together.
Finish: Remove from heat. Stir in the parsley and season with salt and pepper to taste.
Storage
How to use it
Garlic Bread: Dip baguette slices into the freshly made garlic butter and toast in a pan or toaster oven until golden brown.
Garlic Butter Pasta: Cook pasta and reserve about ½ cup of pasta water before draining. In a pan over medium heat, melt 3–4 tablespoons of garlic butter. Add the cooked pasta and a splash of pasta water, then toss until the sauce coats the pasta and turns creamy. Add more pasta water a tablespoon at a time if needed. Plate and top with a squeeze of lemon and extra parsley.
