Artichoke "Sausage" Panini with Roasted Red Peppers

2 slices of Flatbread (I used tomato) 6 tbsp Artichoke Marinara 1 seitan sausage, thinly sliced (I used artichoke and roasted red pepper) ¼ cup Roasted Red Peppers, sliced ¼ cup Artichoke Hearts, chop....