Lamb Flatbread with Feta and Mint - SippitySup

Ingredients

• 1 3/4 teaspoon dry active yeast (from one ¼‑ounce envelope)
• 2 cups water (110 degrees f)
• 2 tablespoons extra-virgin olive oil, plus more for bowl
• 1 tablespoon sugar
• 1 teaspoon salt
• 4½ cup bread flour, plus more for surface
• 1 unsalted butter
• 1 tablespoon extra-virgin olive oil, plus more for brushing and drizzling
• 4 scallions, white and pale-green parts only, thinly sliced
• 2 spring onions, bulb plus 2 or 3 inches of stems, chopped into ¼â€™ pieces
• coarse salt and freshly ground pepper, to taste
• ¼ chopped fresh flat-leaf parsley
• ¼ chopped fresh mint, plus more for garnish
• 1 pound ground lamb
• 1 cup feta cheese, crumbled