Equipment
- Mixing Bowls
- 8x8 baking pan
Ingredients
- 1 cup All-Purpose Flour (1 cup flour = 125 grams)
- 1/4 teaspoon Baking Powder
- 1/4 teaspoon Ground Cinnamon
- 1/4 teaspoon Kosher Salt
- 8 Tablespoons Unsalted Butter, melted and cooled slightly (1 stick)
- 1 cup lightly packed Brown Sugar (light or dark will work) (1 cup sugar = 200 grams)
- 1 large Egg
- 1 teaspoon Pure Vanilla Extract
- 1 cup Old Fashioned / Rolled Oats
- 1 cup Semi-Sweet Chocolate Chips (see note)
- 1/2 cup M&Ms (see note)
Instructions
Preheat and prepare
Preheat oven to 350°F. Spray the pan with nonstick cooking spray.
Mix dry ingredients
In a bowl, whisk together the flour, baking powder, ground cinnamon, and salt.
Prepare wet ingredients
Melt 2 sticks of butter. In a 2nd, larger mixing bowl, whisk together melted butter and brown sugar until evenly combined. Whisk in egg and vanilla.
Combine and add mix-ins
Pour the dry ingredients over the wet ones and stir until no dry spots remain (do not overmix!). Gently stir in oats, chocolate chips, and M&Ms.
Prepare for baking
Pour batter into the pan. Put a few M&Ms on top.
Bake
Bake 30 minutes for gooey bars, until the edges are lightly browned. Or 35 minutes for more crispy bars.
Cool and serve
Let them cool in the pan until the bars can be easily removed. Once cool, slice and serve.
Notes
Chocolate Chips and M&Ms - You can use both or just one of these. Reserve a few extra to scatter on the top if you'd like. If you'd like different fillings try butterscotch chips, chocolate chunks, or toasted pecans / walnuts. Just be sure the total amount of mix-ins add up to 1 1/2 cups.
Glass or Ceramic Baking Pan - If using a glass or ceramic baking pan, the bars will take longer to bake. Expect to add about 5 minutes to the baking time.