Combine the honey or maple syrup, lemon juice and garlic infused oil in a small pot. Set aside.
Thoroughly preheat a saucepan over a medium high heat. Once heated, add a very light splash or spray of oil. This is an extra insurance policy against the haloumi sticking, but thoroughly heated pan is the best way to ensure this.
Slice the haloumi and add it evenly spaced to the pan - it should sizzle on impact. Allow it to cook for 10-15 seconds before flipping the first piece. The idea is for the haloumi to develop a golden brown crust and become gooey inside. You don't want it to get too brown before it becomes gooey, or not get any colour, so adjust the heat accordingly.
Flip each piece of halloumi and repeat on the other side. While you're flipping, turn the heat on for the pot of honey sauce and allow it to come to a simmer (this should happen quickly).
In a small bowl, combine the water and cornstarch. Once a slurry forms, pour this into your honey sauce and stir to combine. It should thicken quickly, but cook it until it reaches your desired consistency.
Once all the pieces of halloumi are off cooked on both sides, take the pan off the heat.
Taste and adjust your sauce to your preferences and add any extra seasonings. Pepper and chilli flakes are what I generally use.
When the sauce has thickened to your liking, remove it from the heat and pour it over the pan of halloumi. Serve immediately.