1-Preheat and Prep: Heat your oven to 350°F (175°C). Grease a 9×13-inch dish generously. This sets you up for easy release and even baking.

2-Mix Dry Ingredients: In a large bowl, whisk 3 cups all-purpose flour, 1/4 teaspoon salt, 1 cup granulated sugar, and 4 teaspoons baking powder. Dry mix first ensures no lumps.

3-Add Wet Ingredients: Stir in 1 ½ cups 2% milk, 2 large eggs, and 2 teaspoons vanilla extract. Combine until smooth batter will be thick but pourable.

4-Incorporate Butter: Gradually mix in 1/2 cup melted salted butter. Fold gently to keep air in for lightness.

5-Pour Batter: Spread evenly into the prepared pan. Smooth the top for pretty swirls.

6-Make Cinnamon Swirl: Beat 1/2 cup softened salted butter, 1 cup light brown sugar, 2 tablespoons all-purpose flour, and 1 tablespoon cinnamon until creamy. Spoon dollops over batter.

7-Swirl Magic: Use a knife to gently swirl the topping into the batter, creating those signature ribbons. Don’t overmix marble effect is the goal!

8-Bake: Pop in the oven for 32 to 38 minutes. Toothpick in center should come out nearly clean with moist crumbs. Ovens vary, so check at 32 minutes.

9-Rest: Let cool in pan for 15 minutes. This firms it up for glazing.

10-Glaze and Serve: Whisk 2 cups powdered sugar, 3 to 4 tablespoons milk, and 1 teaspoon vanilla extract. Drizzle over warm cake. Serve warm or room temp both rock!