Vegan Hot Dog Bake

Ingredients

• 1 teaspoon dried oregano
• 1 1/2 tablespoons olive oil
• salt and pepper
• 12 cherry tomatoes
• 1/2 teaspoon paprika
• 1 teaspoon chilli flakes
• 4 teaspoons ketchup
• 4 hot dog buns
• 4 vegan hot dogs
• 2 onions, peeled, halved and sliced
• 4 large mushrooms, sliced
• 4 teaspoons yellow American mustard