Mexican bean sauce

Name: Mexican bean sauce
Prep time: 15 min
Cook time: 40 min
Total time: 55 min
Cuisine: Mexican, Latin American, American
Ingredients: 4 onions; 1 large carrot (200g); 1/2 cup dried kidney beans; 1/2 cup black beans; 2 tins baked beans budget; 1 jar passata; 2 tablespoons garlic; 2 tablespoons cumin; 2 tablespoons ground coriander; 1 tablespoon ground fennel; 1 tablespoon smoked paprika; 1 teaspoon sweet paprika; 1/2 teaspoon Kashmiri chilli; 1/8 teaspoon cayenne pepper; 1 teaspoon celery seeds; 1 teaspoon garlic powder; 1 beef oxo cube