First things first, preheat your oven to 375°F (190°C). While that's warming up, you can prepare your ingredients. The heat is essential for achieving that perfect puff!

In a medium saucepan over low heat, melt the cubed butter. Add the warm milk and olive oil, stirring until everything is incorporated. Once melted, remove from heat and let it cool slightly.

In a large mixing bowl, combine the tapioca flour, garlic powder, and salt. Whisk together to ensure they mix evenly. It’s vital to distribute the flavors throughout the dough.

Once the butter mixture has cooled to a lukewarm temperature, pour it into the dry ingredients. Stir using a wooden spoon or spatula until it begins to form a dough.

Add the room temperature eggs to the dough, one at a time, mixing vigorously until fully combined. You want a smooth batter. Then, fold in the grated cheese and chopped chives. The dough should resemble a thick batter.

Using a small ice cream scoop or your hands, form small balls of dough (about the size of a golf ball) and place them on a baking sheet lined with parchment paper. Leave some space between them, as they will puff up!

Place your baking sheet in the oven and bake for 15-20 minutes or until the puffs are golden brown and slightly firm to the touch. They will puff dramatically, creating that perfect exterior crispiness.

Once done, remove from the oven and let them cool for a couple of minutes. Serve immediately while they are warm and gooey. Trust me, your guests will be asking for seconds!