Cinnamon Streusel Muffins

Today was my first day making this yummy Cinnamon Streusel Muffin.. It didn't rise as much as I would have liked. However, the taste of it made me care less. This muffin was like true divine mixing of ingredients! It literally feel apart in my mouth!!

Topping
1/3 cup brown sugar, packed

1/4 cup rolled oats

1/2 cup All-Purpose Flour

1/2 teaspoon cinnamon, optional; for added cinnamon flavor

3 tablespoons soft butter

filling

Filling

3 to 4 tablespoons water

3 tablespoons melted butter, 

1/2 cup brown sugar,

1 1/2 tablespoons ground cinnamon 

Batter

1/2 cup (8 tablespoons) butter, melted

3/4 cup lukewarm milk

2 large eggs

1 3/4 cups All-Purpose Flour

1/2 cup rolled oats

2 tablespoons cornstarch

3/4 cup granulated sugar

1 tablespoon baking powder

1/2 teaspoon salt

Good pinch of ground allspice

Good pinch of cinnamon 

1/2 cup cinnamon chips or butterscotch chips

glaze

2/3 cup confectioners' sugar

pinch of salt

1 tablespoon milk, or enough to make a pourable glaze

I used Carmel 

1) Preheat oven to 400°F. Line a 12-cup muffin pan with cupcake papers, or grease it lightly.

2) Prepare the topping by mixing the ingredients together until crumbly. Set aside.

3) Prepare the filling by mix together all of the ingredients. Set aside.

4) To make the batter: In a bowl or measuring cup, whisk together the melted butter, milk, and eggs.

5) In a separate bowl, whisk together the dry ingredients, including the chips.

6) Add the liquid mixture to the dry ingredients, stirring just until combined.

7) Divide half the batter evenly among the muffin cups; a tablespoon cookie scoop works well.

8) Dollop 2 teaspoons cinnamon filling onto each muffin; a teaspoon cookie scoop, filled level, works well here.

9) Top with the remaining batter.

10) Sprinkle generously with the topping, pressing it in lightly.

11) Bake the muffins for 20 to 25 minutes, or until they're golden brown.

12) Remove the muffins from the oven, and wait 5 minutes before transferring them from the pan to a rack to cool.

13) To make the glaze: Mix the glaze ingredients together until smooth. Drizzle over the cooled muffins.