Easy m&m chocolate chip oatmeal bars recipe

Ingredients

• 1 cup/2 sticks unsalted butter, softened
• 1/2 cup + 1 T sugar
• 1/2 cup light brown sugar
• 1/2 cup dark brown sugar
• 2 large eggs
• 2 t vanilla
• 3/4 t table/fine salt
• 1 t baking soda
• 4 T light corn syrup
• 3 T whole milk
• 1 5/8 cups (6 3/4 oz or 194 g) AP flour
• 3 cups old fashioned rolled oats
• 1 cup mini M&Ms + 2 T mini M&Ms, divided
• 1 cup semi sweet chocolate chips
• 1/2 - 1 1/2 t grey sea salt (to taste), for sprinkling - on top of bars