feat: add Creamy Double Decker Fudge

cook/holiday/Creamy Double Decker Fudge.cook

@@ -0,0 +1,10 @@
+>> source: Favorite Brand Name: Gifts From the Christmas Kitchen
+>> serves: 4 dozen
+
+Line #8-inch square pan{} with #foil{}. Place @REESE'S peanut butter chips{1%cup} and 3 cup @sweetened condensed milk{1%14-oz can} in #small microwave-safe bowl{}. Microwave at HIGH (100%) 1 to 1½ minutes, stirring after 1 minute, until chips are melted and mixture is smooth when stirred. Stir in 1/2 teaspoon @vanilla{1%tsp}; spread evenly into prepared pan.
+
+Place remaining sweetened condensed milk and @semi-sweet chocolate chips{1%cup} in another small microwave-safe bowl; repeat above microwave procedure. Stir in remaining 1/2 teaspoon vanilla; spread evenly over peanut butter layer.
+
+Cover; refrigerate until firm. Remove from pan; place on cutting board. Peel off foil. Cut into squares. Store tightly covered in refrigerator.
+
+Note: For best results, do not double this recipe.

docs/holiday/creamy-double-decker-fudge.md

@@ -0,0 +1,45 @@
+# :chocolate_bar: Creamy Double Decker Fudge
+
+![Creamy Double Decker Fudge](../assets/images/creamy-double-decker-fudge.jpg)
+
+| :fork_and_knife_with_plate: Serves | :timer_clock: Total Time |
+|:----------------------------------:|:-----------------------: |
+| 4 dozen | 30 minutes |
+
+## :salt: Ingredients
+
+- :chocolate_bar: 1 cup REESE'S peanut butter chips
+- :glass_of_milk: 1 14-oz can sweetened condensed milk
+- :icecream: 1 tsp vanilla
+- :chocolate_bar: 1 cup semi-sweet chocolate chips
+
+## :cooking: Cookware
+
+- 1 8-inch square pan
+- 1 foil
+- 1 small microwave-safe bowl
+
+## :pencil: Instructions
+
+### Step 1
+
+Line 8-inch square pan with foil. Place REESE'S peanut butter chips and 3 cup sweetened condensed milk in small
+microwave-safe bowl. Microwave at HIGH (100%) 1 to 1½ minutes, stirring after 1 minute, until chips are melted and
+mixture is smooth when stirred. Stir in 1/2 teaspoon vanilla; spread evenly into prepared pan.
+
+### Step 2
+
+Place remaining sweetened condensed milk and semi-sweet chocolate chips in another small microwave-safe bowl; repeat
+above microwave procedure. Stir in remaining 1/2 teaspoon vanilla; spread evenly over peanut butter layer.
+
+### Step 3
+
+Cover; refrigerate until firm. Remove from pan; place on cutting board. Peel off foil. Cut into squares. Store tightly
+covered in refrigerator.
+
+!!! warning
+    For best results, do not double this recipe.
+
+## :link: Source
+
+- Favorite Brand Name: Gifts From the Christmas Kitchen

mkdocs.yml

@@ -142,6 +142,7 @@ nav:
       - Chocolate-Peanut Clusters: holiday/chocolate-peanut-clusters.md
       - Classic Walnut Pie: holiday/classic-walnut-pie.md
       - Cookies & Cream Candy Bark: holiday/cookies-&-cream-candy-bark.md
+      - Creamy Double Decker Fudge: holiday/creamy-double-decker-fudge.md
       - Eggnog Cake: holiday/eggnog-cake.md
       - Five-Cup Fruit Salad: holiday/five-cup-fruit-salad.md
       - Gingerbread People: holiday/gingerbread-people.md