Mini Creamy Mushroom Pies

Name: Mini Creamy Mushroom Pies
Cuisine: European, British
Ingredients: 25 g butter, plus extra for greasing; 1 tsp olive oil; 1 small onion, finely sliced; 1 garlic clove, crushed; 350 g mixed mushrooms, sliced; small handful parsley, finely chopped; 100 ml single cream / whipping cream; 375 g pack ready-rolled short crust pastry; a little plain flour, for dusting; 1 egg, beaten; 1 tsp caraway seed