Bacon-Cheddar Muffins

Ingredients

• ["3/4 cup cornmeal", "6 tbsp unsalted butter, cubed, at room temperature", "2 tbsp sugar", "1 1/2 tsp kosher salt", "3 eggs", "3/4 cup all-purpose flour", "6 tbsp rye flour", "1 1/2 tbsp baking powder", "1/2 cup plus 1 tbsp canola oil", "3 tbsp plus 2 tsp maple syrup", "1 cup plus 2 tbsp buttermilk", "1/2 cup diced cheddar (1\" cubes) plus 1/4 cup grated""