Creamy Halloumi A La King (Quick And Delicious Vegetarian Dish)

Ingredients
250g Halloumi Cheese
1 Bell Green Pepper diced
1 white onion Diced
1/2 a garlic minced
6-8 Mushrooms sliced
2-3 tbsp Avocado or vegetable oil
1 tbsp Unsalted butter
1 tbsp All- purpose flour
1 pinch of salt and pepper to taste
1/2 - 1 cup of semi-skimmed milk
1 tsp vegetable bouillon
A few parsley leaves for garnish