Heat your oven to 415 degrees.
In a mixer on low (you can also hand mix if you’d like), mix together your dry ingredients (flour, baking soda, salt, brown sugar).
Once mixed, slowly add in the wet ingredients as the mixer is on, starting with soften butter, milk, greek yogurt, vanilla extract, then eggs.
Line your sheet pan with parchment paper or butter/spray with non-stick then pour your mixed batter into the pan.
Spread the mixture across the pan evenly with a spatula if needed then add your mix in of choice on top, I used blueberries and chocolate chips.
Bake for 10 minutes in the oven then using a toothpick, check to see if the pancake has been cooked through, if not, cook for another 5 minutes.
Let cool before cutting it and serving/freezing.