Step 1 Heat the pan and add the mince, stirring until it is brown and crumbly. Add the onion and cook till soft.
Step 2 Stir in the beans, tomatoes, spices, stock, Worcestershire sauce, purée and sugar, then mix well. Simmer the mixture until quite thick. Don't put on a lid.
Step 3 Heat the frying pan or stove-top grill. Spray a tortilla lightly on one side with cooking spray. Spread the unsprayed side with meat mixture and a little grated cheese and place spray side down on the grill plate or in the frying pan.
Step 4 Spray a second tortilla and place on top with the spray side facing up, so when you turn the quesadilla over the spray makes it go brown and crispy without sticking.
Step 5 When brown on the bottom and slightly crispy, use a spatula to turn it over and cook on the other side. Cut into wedges and serve with a salad or eat as a snack.