Italian garlic chicken with white bean rosemary mash

Name: Italian garlic chicken with white bean & rosemary mash
Ingredients: 1 egg; 2 garlic cloves; 20g parmesan; 2 tbsp milk; 4 chicken thigh fillets; 2 tbsp plain flour; light olive oil for shallow-frying; 150g fresh white breadcrumbs (frozen is fine); cooked green beans to serve; 1 tbsp olive oil; 2 rosemary sprigs; 2 x 400g cans cannellini beans; 1 lemon cut into 6 wedges