Preheat oven to 400 degrees F.
Cut off the top of the garlic bulb and drizzle with extra virgin olive oil. Wrap the bulb in aluminum foil and bake on a baking sheet for approx. 30-40 minutes.
After the garlic cools, squeeze the roasted garlic out of the cloves and mix with avocado, lime juice, and chia seeds in a bowl until smooth.
Stir in the diced onion and salt.