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1
Heat oven to 375F (190C).
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2
Coat 13x9x2 inch baking dish with cooking spray.
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3
Bring large pot salted water to boil.
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4
Mix chili powder and cumin.
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5
Melt butter in medium-size saucepan.
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6
Add cornflake crumbs, stirring to coat.
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7
Scrape onto waxed paper; reserve for topping.
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8
Shake flour and 1 cup milk in covered container until smooth.
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9
Combine remaining milk, salt, hot pepper sauce and 1 tablespoon chili powder mixture in saucepan.
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10
Bring to simmering.
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11
Whisk flour-milk mixture into milk mixture in saucepan; cook, stirring, for 10 minutes or until thickened and smooth.
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12
Remove from heat.
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13
Stir in 2 cups of the cheese.
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14
Cover.
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15
Cook macaroni in boiling water for about 8 minutes or until firm but tender; drain.
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16
Meanwhile, heat non-stick skillet over medium-high heat.
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17
Add beef and onion; cook, breaking of meat, for 6 minutes or until no longer pink.
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18
Carefully drain excess liquid from skillet.
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19
Stir tomato paste and remaining chili powder mixture into meat mixture; cook, stirring, for 3 minutes.
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20
Remove from heat.
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21
Combine macaroni and cheese sauce in macaroni cooking pot.
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22
Spoon half of mixture into prepared baking dish.
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23
Spoon meat mixture into prepared baking dish.
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24
Spoon meat mixture evenly over top, spreading level.
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25
Top with remaining macaroni.
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26
Sprinkle evenly with remaining cheese and reserved corn flake crumbs.
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27
Bake in 375F (190C).
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28
oven for 30 minutes or until bubbly and golden brown.