Mushroom Onion Stuffed Chicken Breasts

재료

chicken breast: 1.5 kg (3 lb)

onion: 2 pc

mushrooms: 400 g (14 oz)

black pepper: 2 g (0.1 oz)

salt: 3 g (0.1 oz)

butter: 80 g (2.8 oz)

cheese: 150 g (5.3 oz)

The salad:

cabbage: 250 g (8.8 oz)

salt: 2 g (0.1 oz)

black pepper: 2 g (0.1 oz)

cucumbers: 3 pc

canned corn: 100 g (3.5 oz)

dill: 10 g (0.4 oz)

apple vinegar: 5 ml (0.2 fl oz)

vegetable oil: 20 ml (0.7 fl oz)