Best Sour Cream Rhubarb Muffins - 5 Mins Recipes

Ingredients

• 1.5 cups all-purpose flour
• 0.5 cup granulated sugar
• 1.5 tsp baking powder
• 0.25 tsp salt
• 0.5 tsp ground cinnamon
• 0.5 cup sour cream
• 0.25 cup melted unsalted butter
• 1 large egg
• 1 tsp vanilla extract
• 1 cup fresh rhubarb, diced into 1/4-inch pieces
• 2 tbsp all-purpose flour
• 2 tbsp brown sugar
• 1 tbsp cold unsalted butter, cubed