Put the garlic clove and capers in a food processor. Blend until broken down and minced, approximately 5-10 seconds.
Add the remaining ingredients except for the olive oil.
Blend the mixture while streaming the olive oil in through the top hole of the food processor until just combined. Process fast for a tapenade with texture, or longer for a smooth tapenade.
Serve with crostini or on top of pasta, chicken, or vegetables. Tapenade can be stored in the refrigerator for up to 3 days.
Notes
While crostini is not keto, this tapenade is and makes a great condiment or topping.