Beef pizza on pita bread

Ingredients:

• 3 tablespoons extra-virgin olive oil
• 1 medium onion, finely chopped
• 1 medium red bell pepper, finely chopped
• 2 tbsp tomato paste
• 220 g of ground beef with 10% fat content
• 0.5 cup plain Greek yogurt, 2% fat
• 1 tbsp + 2 tsp red wine vinegar
• 4 whole grain pitas (no pockets)
• 1 head of lettuce, torn into pieces
• 1/2 cup pickled beets, cut into bite-sized pieces
• 1 small cucumber, peeled and thinly sliced

Preparation:

1. Position a rack in the upper third of the oven and preheat the oven to 200°C.
2. In a large nonstick skillet, heat 1 tablespoon olive oil over medium-high heat. Add the onion and bell pepper and cook, stirring occasionally, until golden brown, 6-8 minutes. Add the tomato paste and cook, stirring, until brick-red, 1 minute.
3. Add the beef, 2 tablespoons water, 3/4 teaspoon salt, and black pepper to taste and cook, breaking up the meat, until browned, 3 to 4 minutes. Remove from heat and stir in 1/4 cup yogurt and 2 teaspoons vinegar. Season with salt and pepper to taste and transfer to a bowl.
4. Wipe out the pan and return to medium heat. Brush the pita with 1 tablespoon of olive oil, then lightly toast in the pan, about 45 seconds per side.
5. Place the pita bread on a baking sheet and spread the meat evenly over it. Place in the oven and bake for 6 minutes. In a bowl, combine the remaining 1/4 cup yogurt, 1 tablespoon each of olive oil and vinegar; season with salt and pepper to taste. Add the lettuce, pickled beets, and cucumber and toss to combine.
6. Slice the pizza and serve with salad.