In a medium saucepan, melt 4 tablespoons of unsalted butter over medium heat. Keep an eye on it to ensure it doesn’t brown; this should take about 2 to 3 minutes. Once melted, prepare to infuse the sauce with aromatic flavors by adding your minced garlic.

Add the 2 cloves of minced garlic to the melted butter and sauté for 30 seconds to 1 minute, stirring occasionally until the garlic is fragrant and just starting to turn golden.

Slowly pour in 240 milliliters of heavy cream while continuously stirring to combine it with the buttery garlic mixture. Increase the heat slightly and bring it to a gentle simmer, cooking for about 3 to 5 minutes until it thickens slightly.

Stir in 1 tablespoon of finely grated lemon zest and 2 tablespoons of fresh lemon juice, continuing to gently simmer for an additional 2 to 3 minutes.

Remove the saucepan from heat and season your Lemon Butter Sauce with salt and freshly ground black pepper to taste. If using 1 teaspoon of Dijon mustard, whisk it in now until fully blended.

Before serving, garnish your creamy lemon butter sauce with chopped fresh parsley or chives. Drizzle the sauce over your favorite dishes and relish the delightful zesty richness!