Preheat the oven to 220 degrees (200 fan).
Peel and roughly chop the onion into pieces about 2cm. Slice the red pepper into thin strips. Prick the sausages with a fork or the point of a knife.
1 small red onion, ½ red pepper
Pour the olive oil onto the baking tray. Add the sausages, pepper and onions and stir to coat with the oil.
1 tablespoon olive oil, 450 g sausages
Cook the sausages and vegetables for 15 minutes in the preheated oven.
Meanwhile, make the batter. Add the flour and a pinch of salt and pepper to a bowl and make a well in the centre.
100g plain flour, seasoning
Break the eggs into the well in the flour. Using a whisk gradually incorporate some of the flour from the edge of the bowl.
2 eggs
Add the milk to the centre and mix in the remaining flour. Whisk until the batter is smooth and free from lumps.
160 ml oat milk
Remove the sausages and vegetables from the oven after 15 minutes and quickly pour over the batter and scatter over the tomatoes. Return the tray to the oven as soon as possible.
12 cherry tomatoes
Cook the dairy-free toad in the hole for 30 minutes. It's important not to open the oven for at least the first 20 minutes!