Bakery Style Jumbo Chocolate Chip Muffins 🧁🧁🧁 How to make bakery style Jumbo Chocolate Chip Muffins. This recipe yields 5 jumbo muffins OR 12 regular sized muffins. Here's what you'll need: 1 cup sugar (200g) ½ cup melted butter (125ml) ¼ cup vegetable oil (55ml) 2 large eggs (room temp) 1 cup milk, at room temperature 2 tsp vanilla (10ml) 2 and ½ cup all purpose flour. (310g) 1 tbsp baking powder 1 tsp baking soda 1/2 tsp salt 1 and a half cup of of semi sweet chocolate chips (minis) 1. Preh