Cook & drain pasta according to pkg directions; set aside (keep warm).
Meanwhile, cook meats and onion; stir in spaghetti sauce, mushrooms, and herbs.
In the crock-pot, spread ONE-THIRD of the meat over the bottom, then ONE-THIRD of the noodles, sprinkle ONE-THIRD of the pepperoni slivers and one cup of each of the cheeses.
Repeat twice with remaining meat-sauce, noodles, pepperoni and cheeses.
Actually, you can do this in whatever order you like - but, please, finish with cheese on the top!
Cover crock-pot and cook on LOW for 3-4 hours (the smell will be too much to believe!).
Cheese should be nicely melted and browned to a crunchy, delectable goodness around the edges.

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Nutrition Facts

Per Serving Per 100 g

Amount Per 1 Serving
Calories	763.3 Kcal (3196 kJ)
Calories from fat	359.16 Kcal
		% Daily Value*
Total Fat	39.91g	61%
Cholesterol	237.05mg	79%
Sodium	1384.97mg	58%
Potassium	663.56mg	14%
Total Carbs	11.61g	4%
Sugars	2.59g	10%
Dietary Fiber	2.39g	10%
Protein	88.92g	178%
Vitamin C	13.3mg	22%
Iron	10mg	55%
Calcium	1455.8mg	146%

Amount Per 100 g
Calories	198.12 Kcal (829 kJ)
Calories from fat	93.22 Kcal
		% Daily Value*
Total Fat	10.36g	61%
Cholesterol	61.53mg	79%
Sodium	359.49mg	58%
Potassium	172.23mg	14%
Total Carbs	3.01g	4%
Sugars	0.67g	10%
Dietary Fiber	0.62g	10%
Protein	23.08g	178%
Vitamin C	3.5mg	22%
Iron	2.6mg	55%
Calcium	377.9mg	146%

* 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.