Feta and olive beef tostadas

Ingredients

• 1 tablespoon vegetable or olive oil
• 550 gram beef mince
• 2 tablespoon moroccan spice mix
• 1 large carrot, coarsely grated
• 1 small red onion, halved, thinly sliced
• 1 cup fresh coriander sprigs
• 1/3 cup pitted kalamata olives, sliced
• 100 gram feta, crumbled
• 4 flour tortilla wraps
• cooking oil spray
• 50 gram baby spinach leaves