Follow these simple steps to create a restaurant-quality Garlic Butter Shrimp and Broccoli in your own kitchen:

1. Prepare the Ingredients: If you haven’t already, peel and devein the shrimp. Rinse them under cold water and pat them thoroughly dry with paper towels – this is crucial for getting a good sear. Cut the broccoli into uniform, bite-sized florets. Mince the garlic. Squeeze the lemon juice. Have all your other ingredients measured and ready to go (mise en place). This makes the cooking process smooth and stress-free.
2. Cook the Broccoli: Heat the 1 tablespoon of olive oil in a large skillet or pan over medium-high heat. Once the oil is shimmering, add the broccoli florets. Season with a pinch of salt and pepper. Sauté for 4-6 minutes, stirring occasionally, until the broccoli is tender-crisp and bright green. You want it to have a little bite, not be mushy. Remove the broccoli from the skillet and set it aside on a plate.
3. Sauté the Aromatics: Reduce the heat to medium. Add 3 tablespoons of the unsalted butter to the same skillet. Once the butter is melted and foamy, add the minced garlic and red pepper flakes (if using). Cook for about 1-2 minutes, stirring constantly, until the garlic is fragrant. Be very careful not to burn the garlic, as it will become bitter.
4. Cook the Shrimp: Add the patted-dry shrimp to the skillet in a single layer. Season them with salt and pepper. Cook for 2-3 minutes per side, or until the shrimp turn pink and opaque and curl into a “C” shape. Avoid overcrowding the pan; cook in batches if necessary to ensure the shrimp sear rather than steam. Overcooked shrimp will be tough and rubbery, so watch them closely.
5. Create the Sauce: Once the shrimp are cooked, pour in the chicken broth (or white wine). Bring it to a gentle simmer, scraping up any browned bits (fond) from the bottom of the pan – these bits are packed with flavor! Let the liquid reduce slightly, about 1-2 minutes.
6. Finish the Sauce & Combine: Reduce the heat to low. Stir in the remaining 3 tablespoons of unsalted butter and the fresh lemon juice. Swirl the pan or stir gently until the butter is completely melted and the sauce is smooth and slightly thickened. This step, known as “mounting” the sauce with butter, gives it a luxurious, glossy finish.
7. Bring It All Together: Return the cooked broccoli to the skillet with the shrimp and sauce. Toss everything gently to ensure the broccoli and shrimp are well-coated with the delicious garlic butter sauce. Let it warm through for about a minute.
8. Serve Immediately: Taste and adjust seasoning if necessary (more salt, pepper, or lemon juice). Garnish with fresh chopped parsley, if desired. Serve hot and enjoy the fruits of your labor!