Buttermilk Cluster Rolls

Ingredients

• 28 ounces/800 grams ap flour
• 20 ounces/570 grams buttermilk, room temp or microwaved for 40 to 60 seconds to take the chill off it
• 1/4 ounce/7 grams (1 package) active dry yeast
• 1/2 ounce/14 grams kosher salt (1 tablespoon)
• 1.5 ounces/40 grams honey (2 tablespoons)
• vegetable spray or butter for greasing a springform pan (can use 9-inch cake pan but may be hard to remove rolls)
• 1 egg
• 1 teaspoon poppy seeds (or as desired)
• 1 tablespoon melted butter, optional