Gluten-free Boxty Steak Sandwich

Gluten-free Boxty Steak Sandwich

Ingredients 1 good quality sirloin steak (approx. 280g) 250 g boxty (use potato bread for a dairy-free option) 2 small shallots 2 red bell peppers Juice of 1 lemon 2 tbsp Dijon mustard 1-2 tbsp olive oil 2 tsp rice vinegar (or apple cider vinegar) 1-2 tsp fresh thyme...