Melt the butter in a small saucepan over medium heat, stirring occasionally, until it starts to turn a light golden brown color and smells nutty, about 3-4 minutes.
Add the capers, lemon juice, garlic, salt, and black pepper to the pan and stir to combine. Cook for another minute or so, until the mixture is hot and bubbly.
Pour in the broth and bring the mixture to a simmer. Cook for another 2-3 minutes, stirring occasionally, until the sauce has thickened slightly.
Remove the pan from the heat and let the sauce cool for a minute or two.
Spoon the caper sauce over your cooked fish, chicken, or vegetables and serve immediately. Enjoy!