Raspberry Lemon Streusel Muffins - Oregon Raspberries & Blackberries

Ingredients

• 1/4 Cup melted butter
• 1/2 Cup all purpose flour
• 2 Tablespoons sugar
• 1-1/2 teaspoon finely shredded lemon peel
• 2-1/2 Cup all purpose flour
• 2 teaspoons baking powder
• 1 teaspoon baking soda
• 1-1/3 Cup sugar
• 1 Tablespoon finely shredded lemon peel
• 1 egg
• 1 Cup buttermilk
• 1/2 Cup melted butter
• 1 Tablespoon lemon juice
• 1-1/2 Cup (about 6 oz) whole frozen raspberries - do not thaw
• 1 Tablespoon flour