Preheat oven to 350°. Microwave morsels in a microwave-safe bowl at HIGH 1 to 1 1/2 minutes or until melted and smooth, stirring at 30-second intervals.
Beat butter and sugar at medium speed with an electric mixer until well blended (about 5 minutes). Add eggs, 1 at a time, beating just until blended after each addition. Add melted chocolate; beat until blended.
Sift together flour, baking soda, and salt. Gradually add to chocolate mixture alternately with sour cream, beginning and ending with flour mixture. Beat at low speed just until blended after each addition. Gradually add hot water in a slow, steady stream, beating at low speed just until blended. Stir in vanilla.
Place 36 paper baking cups in 3 (12-cup) muffin pans; spoon batter into cups, filling three-fourths full.
Bake at 350° for 18 to 20 minutes or until a wooden pick inserted in centers comes out clean. Remove from pans to wire racks, and let cool completely (about 45 minutes).
Cook butter in a small heavy saucepan over medium heat, stirring constantly, 6 to 8 minutes or until butter begins to turn golden brown. Immediately remove from heat. Pour butter into a bowl. Cover and chill 1 hour or until butter is cool and begins to solidify.
Beat butter and cream cheese at medium speed with an electric mixer until creamy; gradually add powdered sugar, beating until light and fluffy. Stir in cinnamon and vanilla.
Pipe frosting onto cupcakes. Garnish, if desired.

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Nutrition Facts

Per Serving Per 100 g

Amount Per 1 Serving
Calories	889.76 Kcal (3725 kJ)
Calories from fat	557.54 Kcal
		% Daily Value*
Total Fat	61.95g	95%
Cholesterol	186.39mg	62%
Sodium	537.51mg	22%
Potassium	235.45mg	5%
Total Carbs	72.6g	24%
Sugars	35.83g	143%
Dietary Fiber	7.39g	30%
Protein	12g	24%
Vitamin C	0.1mg	0%
Vitamin A	0.4mg	13%
Iron	3.4mg	19%
Calcium	120.4mg	12%

Amount Per 100 g
Calories	377.02 Kcal (1579 kJ)
Calories from fat	236.25 Kcal
		% Daily Value*
Total Fat	26.25g	95%
Cholesterol	78.98mg	62%
Sodium	227.76mg	22%
Potassium	99.76mg	5%
Total Carbs	30.76g	24%
Sugars	15.18g	143%
Dietary Fiber	3.13g	30%
Protein	5.08g	24%
Vitamin A	0.2mg	13%
Iron	1.4mg	19%
Calcium	51mg	12%

* Percent Daily Values are based on a 2000 calorie diet. Your daily values may be higher or lower depending on your calorie needs.
Find out how many calories should you eat.

Tastes

salty
savory
bitter
sweet

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