Muffin Rhubarb Blueberry

Bahan-bahan (12 porsi)

• 1 cup granulated sugar ($0.38)
• 2 eggs ($0.50)
• ½ cup vegetable oil ($0.30)
• ½ cup milk ($0.10)
• ½ lemon (jus dan kulit, $0,29)
• 2 cups all-purpose flour ($0.38)
• 2 tsp baking powder ($0.08)
• ½ tsp baking soda ($0.01)
• ½ tsp salt ($0.02)
• ½ tsp ground cinnamon ($0.03)
• 1 cup frozen blueberries (130g, $0.82)
• 1 cup rhubarb (daun dibuang, dipangkas, dicuci, dan dipotong-potong berukuran ½ inci (130g) $2,00*)
• Nonstick cooking spray ($0.01)
• 3 Tbsp butter (cold, $0.45**)
• ¼ cup brown sugar ($0.13)
• ¼ cup all-purpose flour ($0.05)