Dice the mushrooms and slice the halloumi.

Slice and mash up the avocado. Season with salt, pepper and lemon juice.

Bring a pan to medium heat, add the olive oil and grill the mushrooms and halloumi. Season with salt and pepper.

Cut the bagels in half and toast.

Place the smashed avocado on the bottom of the bagel and top with the mushroom and halloumi mix.

Add another squeeze of lemon juice if desired. Enjoy!