Homemade Cheesy Asparagus Quiche in Cast-Iron Skillet - Quickie Treats

Ingredients

• 8 tablespoons unsalted butter
• 2 cups (250g) all-purpose flour
• 1/2 teaspoon baking powder
• 1/2 teaspoon kosher salt
• 1 teaspoon black pepper
• 1/2 cup (55g) grated parmesan cheese
• 1/4 cup (60ml) cold water
• Olive oil, for sautéing
• 1 bunch asparagus, trimmed and cut into 7cm pieces
• 1 1/2 cups (150g) shredded sharp cheddar cheese
• 1/4 cup (25g) grated parmesan cheese
• 1 cup (200g) cherry tomatoes, halved
• 6 large eggs
• 1/3 cup (75g) sour cream
• 2/3 cup (160ml) half-and-half
• 1 1/2 teaspoons kosher salt
• 1/2 teaspoon freshly ground black pepper